hacker rotary table made in china

Unfortunately they too suffer from "cheapitis". Indian made tools fall into two definate classes of good and not so good. The problem being that there is little or no consistency from model, size or brand. Bison and some of the other vendors like Grizzly do have a decent quality offering, but they are not sub 100 dollar items. You definately want the largest table that your mill will accomodate because you also need room to be able to clamp and secure the piece you are working on. I am not familiar with the dimensions of your lathe/mill but you want to try to keep the quill retracted as close to the head as possible to impprove stiffness and reduce chatter, but you do not want to crowd the head too much either. I would also opt for the horz/verticle mounting options to increase the tools use and versatility. The sub 100 dollar units seem to be rough, have a good bit of looseness and have been found to even still have casting dirt still in the cavities. This is especially prevalent in the cheapest offerings from places like CDCO and Shars. So I would suggest a bit more shopping with an eye toward making one slightly more expensive purchase rather than having to revuild/repair a smaller unit that you will ultimately replace or relegate to the "spare parts" dungeon. I have not bught one myself yet, but I have been following a number of threads outlining the woes of others who failed too remember the old adage of :Ya gets what ya pays for, and nothing more" Hope this helps and is not intended to discourage just inform and to help you become aware of the pitfalls with rotary tables in general.

Unfortunately they too suffer from "cheapitis". Indian made tools fall into two definate classes of good and not so good. The problem being that there is little or no consistency from model, size or brand. Bison and some of the other vendors like Grizzly do have a decent quality offering, but they are not sub 100 dollar items. You definately want the largest table that your mill will accomodate because you also need room to be able to clamp and secure the piece you are working on. I am not familiar with the dimensions of your lathe/mill but you want to try to keep the quill retracted as close to the head as possible to impprove stiffness and reduce chatter, but you do not want to crowd the head too much either. I would also opt for the horz/verticle mounting options to increase the tools use and versatility. The sub 100 dollar units seem to be rough, have a good bit of looseness and have been found to even still have casting dirt still in the cavities. This is especially prevalent in the cheapest offerings from places like CDCO and Shars. So I would suggest a bit more shopping with an eye toward making one slightly more expensive purchase rather than having to revuild/repair a smaller unit that you will ultimately replace or relegate to the "spare parts" dungeon. I have not bught one myself yet, but I have been following a number of threads outlining the woes of others who failed too remember the old adage of "Ya gets what ya pays for, and nothing more" Hope this helps and is not intended to discourage just inform and to help you become aware of the pitfalls with rotary tables in general.

I am starting out with my recently acquired mill, and the (ever longer) list of projects contain several that would be easier (possible!) with a small rotary table.

The Mill (an SX1LP) seems to suit a 4" table. Reading the forum about such devices I think a simple H/V one would be fine. There seem to be two main choices (in my price bracket) 36:1 (10°/turn) ratio and 90:1 (4°/turn) ratio. The former are a bit cheaper, but the handwheel is on top in the vertical position while the 90:1 seem to have the handwheel horizontal in both orientations which would seem more useable on my small mill.

A 36:1 table turns more quickly than 90:1, making it faster to use, but less accurate. Reduced accuracy doesn"t matter provided only simple angles will be needed. Stuff like hexagon heads.

However, new rotary table owners are soon likely to find jobs where extra accuracy is valuable! Gear cutting is the obvious example, but there are many others, such as cams, helices, drilling awkwardly spaced PCDs etc.

If gear cutting & chums are ever on the menu, a 90:1 table is better. But, oh dear, more money - gear cutting requires a set of division plates or a stepper motor with driver. Manually moving a table to cut 57 teeth ( 6.316° ) per step, soon reduces operators to a nervous wreck and mechanical help keeping track is pretty much essential. I"m not sure 4" tables can be had with division plates, and would recommend a 5" 90:1 table with plates if any advanced functions are on the cards.

Strong rotary tables cost big money. I suggest the hobby type and some expensive makes are unsuited to heavy work whatever the ratio. Brutally hacking out the inner arcs and spokes of several big traction engine wheels at top speed will trash them. Treated with mild respect for ordinary work either ratio should be fine.

I"m actually quite liking using 72:1 and tend to pick that up in preference to my 90:1 table but not sure if there are any to fit your budget with that number of turns as the ARC ones are a bit more costly than the norm.

If (and I repeat, if) you go down the route of adding dividing plates to it, you will almost surely have to calculate all the plate and hole numbers for the 36:1 ratio table.

As far as I can tell, you"re on your own if you want to have a division plate set-up. I was part way through designing such a thing for mine when the need for a 63 tooth changewheel became urgent, so I went for the cheap and cheerful approach of printing a strip of paper with the appropriate divisions marked on it, and taping it round the circumference of the table. Eyeballing alignment with the index mark on the table worked fine - it may not be super precision, but my Imperial threads screw into existing fittings without a problem (and the 63-tooth method isn"t perfect anyway).

The only slight irritation with this method is that the strip is 319.9 mm long for my table, so you have to print it at 33 degrees to fit it on a sheet of A4 - it would have been nice to have printed a whole lot of them on one sheet for different tooth numbers.

The 36:1 model would probably have bigger, stronger teeth and more suited for machining while rotating the table while the 90:1 model will be more accurate but will have smaller, weaker teeth. No problem if locked in stationary position but not as good while rotating.

A more important question may be the number of slots. I think 4 slots is much more useful than 3, which many of the cheaper tables have, as it is easier to fit a 4 jaw chuck which will allow more accurate centering and take up less vertical space than a 3 jaw. Also generally allows easier clamping.

Peter, I have the SX2P mill and apart from it having 25mm more height between table and spindle the table size and X and Y travel are the same as your SX1LP. I started out with a 4 inch rotary table (a cheapie dont go there) but I found it a bit too small. A 6 inch would be too big but came across a 5 inch which is what I went for, came as a set with chuck, tailstock and plates.

A picture below showing its size against the table which gives you some idea. With the 4 jaw chuck and backplate fitted and a Jacobs in the spindle there is only 45mm between the two chucks so I have had to resort to shortening one or two drills in the past. There is more space of course with collet mounted drills and cutters and without the 4 jaw there is 205mm between the rotary face and spindle.

Thanks for all the advice - very helpful. The main projects I have on the (ever growing) list that need some sort of controlled rotation are a motor mount for the Taig lathe so that I can fit a DC speed controlled motor, and some calibrated dials (HH"s Lining tool is on the timeline for that and the ratchet wheels will need the table). The motor mount needs curved adjustment slots but it will be in aluminium so less of a risk.

Thanks Paul for the warning. The reason I asked about relative strength was that the cheap 36:1 tables all seem to have the handle angles towards the centre while the 90:1 ones it is straight. That suggested the cheap tables had a smaller wormwheel, and I was wondering.

Just an update for anyone interested - against advice I ordered table & index plates from a remote supplier (China!) but who shipped from the Czech Republic so no customs or duty (until 1st Jan). Table arrived by courier in less than a week. First impressions good. certainly looks more than adequate for my needs and mill.

On investigation it turned out to be a 110mm diameter 4 slot 72:1 table rather than the 90:1 I thought I was getting. So opened discussions with supplier. Very responsive - offered a swap, or a discount if I kept it. Based on Jason B"s comments about usability I decided on the latter.

(i) With the worm gear disengaged, I can push/pull the table laterally (orthogonal to the axis of rotation) by about .05mm. Tightening the axial preload collar on the base of the unit has no effect on this "slop".

Having had first hand experience of using one of these Soba rotary tables for about the last eight years I can"t say I have ever felt the need to take that measurement until I read this post. I have not noticed an issue with mine and it does what I would expect and I have made models using it that have taken medals and highly commended awards so to me it"s certainly fit for the purpose of making models, others may have other purposes that require more.

I have both a Vertex 4" and Vertex 6" Rotary table and although the 6" tightens slightly as you turn the handle for half a turn, it remains smooth and there"s no appreciable slop in the mechanism and I like them both. Based on this, I bought (the company paid for it) a (cheaper) Soba 6" rotary table for use at work which, because it looked identical to the Vertex, I mistakenly assumed was made on the same production line and simply rebadged. By comparison and based on expectation, the Soba was disappointing being rougher finished and not as well made. However it worked sufficiently well for the stuff we were chonking out. It made me cautious about buying another though having been spoilt by the Vertex, so unless you"re on a tight budget, I personally would say pay the extra if you want to be sure.

I purchased 6" soba table some years ago from a well known UK supplier. It failed and needed a new worm wheel. I was advised that part HVRT-03 was not available. A supplier here in Australia had a table that looked the same and could get a gear for $98 AU. Now the good news. They had a sale on the next week and a 6" vertex was $180. The soba dividing plates and tail stock will fit it.

The reason for the failure was having too much or any back lash while milling 16mm cooling channels in a 300dia Al plate. The worm gear is soft cast iron spur gear cut at about 1.5 degree helix angle (not a worm wheel). It had teeth missing in more than one place around it. Now the fix. A small amount of grinding with a burr to clean up any high spots in the table body and a spacer to go between the table top and the gear. The gear now hangs lower just clearing the inside and the worm bears higher up on an undamaged part of the gear. It now work fine.

There-in lies the rub. As such there will be point contact only between worm and gear. Suitable For Positioning Only and not driving under load. Pity they don"t mention this in the instructions as there have been quite a few others posting similar experiences. If you know, you can drill holes around the periphery of the table and use a tommy bar to provide rotary motion during machining by "hand feed". Stops clamped around the periphery provide control over total angle machined. Just like the simple wormless rotary tables designed years ago by GH Thomas and Harold Hall.

Perfectly suitable for curves, it"s just overloaded with work that is probably too big for them or take excessive cuts they will fail, much the same for any tooling.

Perfectly suitable for curves, it"s just overloaded with work that is probably too big for them or take excessive cuts they will fail, much the same for any tooling.

For heavy curve cutting a £150 6" rotary table might be considered disposable. You can pay three or four times more dosh for a better version of the same table, but it"s still lightly built for hacking out curves, and much more painful if you destroy one!

Not Soba, but an interesting watch if you have 90 minutes to spare.... Stefan Gotteswinter strips and reworks a Vertex rotary table to move accurately and smoothly to correct similar problems to those experienced by the OP, at :

We are proud to endorse your product and your company. We purchased the first mats for our rigs over 25 years ago and have continued to do so for every one of our now 20 rigs. We tried an import mat made of some kind of recycled material about 5 years ago, but it quickly started curling and created a trip hazard on our rig floor. We have also purchased your racking mats and center mats which have held up as well as the rotary mats. At Scandrill Inc. we appreciate the long term relationship and your willingness to repair or replace lost sections or damaged mats years and years after the original purchase date.

Our first Safety Pad II was installed on Rig #13 in November 1981. Since then, Rig #13 has logged over 700 operating days and the pad is still providing an effective slip resistant working surface around the rotary table. As you are aware, we continued purchasing Safety Pad II until all 17 of our land based rigs were equipped.

I am convinced that the Safety Pad II has been one of the wisest and most cost effective rig safety equipment investments we have made. I have not identified a single injury where insecure footing around the rotary table was the primary cause or a contributing cause, where the Safety Pad II was in use. I believe the secure fotting that the pad provides has been an important contributing factor to the 69% reduction in our disabling injury incidents rate from 1981 to 1984.

First off, the Safety Pad II reduces slip and fall incidents to practically nil. Employees are able to maintain traction around the rotary table even though it may be wet or covered with drilling fluids. Trip time, both going in and coming out of the hole is reduced as much as thirty (30) minutes per trip which equates to one hour per round trip.

On board "WEST VANGUARD" it has been in use approximately 10 months. We may also add that during this period, there has not been a single slip-fall injury on the rotary table.

It must be some of the best to be found on the market. We are extremely satisfied with it, and it has not been damaged at all. Subjected to very rough treatment. The undersigned introduced it on "WEST VENTURE" having seen it in use on "VILDKAT" where they also use oil based mud. It gives a remarkably good "footgrip" and despite spills of oilbased mud, it has increased the safety to the workers. Use of other remedies, such as Wallnut shells etc, has not nearly the same effect. These are dissolving, and may cause problems to the ball bearings for the rotary. It is strongly recommended by the undersigned.

I wanted to write you to let you know how much we have enjoyed your product, Safety Pad II. I have talked to the toolpushers on both hitches and most of the men we have on the Gulfdrill who are using it. Everyone has told me it"s the best way that they have seen yet to control the problem of slipping down on a muddy rotary table. From a safety supervisors out look it"s working out better than I thought. We have almost eliminated all of our accidents on the floor due to falls or slipping down with the Safety Pad.

All crews on Continental Drilling Co. Rig #3 would like to thank the company for providing the rotary table mat on this rig, and would like to have these mats around floor as well.

Hacker Radio Limited manufactured domestic radio and audio equipment. The company was formed in Maidenhead by brothers Ron and Arthur Hacker in 1959, and traded successfully until 1977. Financial difficulties resulted in the company being sold and relaunched with the name Hacker Sound which closed in 1979.

The Hacker brothers, Ron (born 1908) and Arthur (born 1910), founded Dynatron in the late 1920s with help from their father Harry, but in 1955 Ekco took over the company, which at the time employed 150 people. By 1959, the number of employees had risen to 250, but the Hacker brothers were uncomfortable with the arrangements and decided to set up their own company, Hacker Radio Limited. In December 1960 Ekco merged with Pye, then Pye was bought by Philips in 1967. In 1981, Roberts Radio bought Dynatron from Philips.

The Hacker brothers acquired a factory in Cox Green, Maidenhead, and started producing a range of transistor portable radios, beginning with the RP10 Herald. Throughout the 1960s, profits were healthy and the workforce increased. In 1973, the company was awarded its first Royal Warrant of appointment, and gained a second in 1976. But financial difficulties experienced in the 1970s caused the company significant problems, and despite cost-cutting measures, the firm"s bankers called in the receivers in May 1977. The assets were bought by Pullmaflex and the company reformed as Hacker Sound; the Hacker brothers were retained as consultants. Arthur Hacker"s son John, who had been made a director in 1975, was made Technical Director. However, difficulties continued, and the company was bought by Motoradio, who moved the operation to Bournemouth. Finally, a fire put an end to activities, and the Hacker trademark was purchased by Roberts Radio.

Hacker Radio primarily marketed its products to the UK domestic market, and were priced towards the top of the market. This, plus the relatively short period of operation (only two decades) results in a lower brand awareness today compared to other household names such as Roberts Radio. However, Hacker products have a strong following among vintage radio enthusiasts and collectors. An active group on Yahoo

The stated Hacker philosophy was to focus on technical performance rather than cost, and words to this effect are frequently found in printed material from the time. Many examples of their products survive today, and it is widely accepted among vintage radio enthusiasts that the build quality is higher than most similar sets from the same era.

Hacker produced many products during their 19 years of trading. Some of their more notable models are described below - a full list is available on-line.

The first product launched was the RP10 Herald. In common with many of their 1960s designs, this was built into a wooden case covered in leathercloth, with foam padding under the front and rear panels and a turntable to enable the set to be rotated for best reception (the internal ferrite rod aerial being highly directional). It featured a large (5 inch by 8 inch) 30Ω loudspeaker, and was powered by two PP9 batteries. Initial sets used Ediswan transistors; later sets used Mullard devices, including the AF117, which unfortunately went on to suffer from tin whisker formation within the encapsulation.

The next Herald, the RP30, retained the same loudspeaker and grill, but had a restyled cabinet that retained the padded leathercloth, which was available in charcoal black, blue or red (the latter with brass trim). The electronic design was revised, and the audio amplifier was rather more complex, incorporating rotary bass and treble controls. Coverage was MW and LW as before, but a version including short wave (16.5 to 50 metres) was offered (the RP31SW). Later, another version offering Marine Band (70 to 200 metres) in addition to MW and LW was released (the RP32), but this sold in relatively small numbers, and few exist today. These sets continued to use the Mullard AF11x-series of transistors.

Another AM Herald, the RP82, was introduced towards the end of Hacker"s existence, but these are very scarce indeed. Electrically, they are based on the very basic AM-only RP70 Ranger.

The RP37 VHF Herald looked like a third-generation Herald, but the presence of a telescopic aerial indicated that this is an FM-capable receiver; indeed it was an FM-only radio. Like most Hacker sets from the 1960s and early 1970s, this set used two PP9 batteries. They were available in the same colour choices as the RP35 AM Herald, and there was a variant with a revised scale in royal blue that incorporated the Open University logo in place of the local stations. The terms of this arrangement are presently unclear.

This was Hacker"s premium portable model, featuring AM and FM reception, and the name was used for four generations of the receiver. The first three versions featured separate tuners and IF stages for the AM and FM sections. The first generation, the RP18 Sovereign, was released in 1964, and was slightly larger than the contemporary Herald. The case was leathercloth-covered wood with padding for the front and rear panels, and was only available in charcoal black. The same large loudspeaker was used. The FM front end was bought in from German company Görler, and the rest of the tuner sections used Mullard AF11x-series transistors. User-adjustable station markers were provided to indicate the position of three favourite stations - but as these could only be moved over the lower half of the FM band (which only extended to 101 MHz), they were intended to locate the three national BBC services available at the time.

The final Sovereign - the RP77MB Sovereign IV - was rather different. It used simpler and cheaper circuitry that no longer had separate AM and FM sections. The case was somewhat larger because it was originally designed to accommodate a cassette mechanism; the RP77MB Sovereign IV was a radio-only version of the RPC1 radio-cassette recorder. The styling was similar to the previous model, with a black anodised finish to the aluminium components. The turntable was dropped for this model. As with the Sovereign III, operation is from eight D-cells or the mains supply, and MW, LW and FM (to 104 MHz) bands are covered. The amplifier circuitry is simpler than the Sovereign III; in fact, it"s electrically very similar to that used in the Sovereign II - though with some component changes. The loudspeaker is a 5 by 8 inch model made by Elac.

There was a variation of the third-generation Sovereign called the RP75 Super Sovereign. This took the basic RP72 Sovereign and added two short wave bands - the only Hacker set to include both FM and SW. Coverage was 10.9 to 33 metres and 27.5 to 89 metres. Electronic fine-tuning (band-spread) was provided, and switchable ISM returned to the FM band; separate switches are provided for ISM and AFC, unlike the Sovereign II where these functions were combined on one switch. A signal-strength (and battery test) meter was provided. Echoing the development of the RP72, a mains power supply was added (the RP75MB), then the FM coverage was extended to 104 MHz. With the MB models, an ATU (aerial tuning unit) was included to improve short-wave reception. The speaker fitted to the RP75 and RP75MB was the same as the RP72, but with a larger magnet.

The RP38 VHF Hunter was released in 1969, and was intended to be an "economy" set. It had MW, LW and VHF coverage. The cabinet was also cheaper to make and lacked a turntable. Initial models used the same 5" by 8" Goodmans loudspeaker as the contemporary RP35 Herald/RP25 Sovereign, but a model from Elac quickly replaced this.

An updated version followed a year later: the RP38A. This added bass and treble controls, using an amplifier that was electrically very similar to that in the RP35/RP25. This model was in production for many years, and went through several cosmetic changes before production ended in 1976. Initially available with side panels in finished hardwood or covered with black leathercloth, and black leathercloth covered front and rear panels (with no padding), the grill was thin aluminium perforated sheet which picks up dents rather easily. In 1973, a new grill was introduced - the same as the Sovereign III "family" - which was a heavy and thick aluminium extrusion. At some point afterwards, the handle is changed to a three-part unit that matches the rest of the Hacker range, and then towards the end of the run, the silver tone control knobs are replaced with black plastic versions. All versions of the Hunter have an FM band that is limited to 101 MHz (and non-switchable AFC).

In 1962, Hacker released the RV14 Mayflower; an FM-only valve table radio finished in striking veneers. Unusually for a Hacker, this set had coverage to 108 MHz - the FM front end was supplied by Görler. The audio sections were based around a pair of ECL86 triode/pentode valves that operated in push-pull, delivering around 7 watts in ultra-linear mode to a large (10 by 7 inch) loudspeaker. An EM84 "magic eye" tuning indicator valve was used.

Hacker made many mono record players, most of which could be converted to stereo with the purchase of a matching amplified loudspeaker; the GP15 Cavalier, GP42 Gondolier and GP45 Grenadier being commonly encountered examples. They also made a number of radiograms, and later music centres with matching loudspeakers and badge-engineered cassette decks from Japanese manufacturers including Sanyo and Nakamichi.

The IKEA HEMNES sideboard was chipped and looking shabby after an international move. At the same time, our kitchen table and chairs were equally shabby. So we replaced them with this IKEA HEMNES kitchen peninsula hack and countertop stools. Related: IVAR cabinets for a glass top kitchen peninsula IKEA items…

Hidden storage in the kitchen island for, not one, but two foldable tables. We built the house and used IKEA cabinets in the entire house — kitchen, baths, laundry. We liked that we could install them ourselves. Because we have an open format kitchen, we have no formal dining room.…

If you don’t have a spacious kitchen but would like to add an island, you’ll love this idea from Sara. It uses 2 LACK side tables (I’m sure we all have one of those tucked away somewhere) and some spare wood. The kitchen island can also be pushed out of…

What I used: – found table frame – 3 IKEA Aptitlig bamboo cutting boards – A left over piece of an old Hyllis hack (see images of the trolley underneath my brand Aptitlig new kitchen island – masonite board cut 18 x 33 inches – drill – nails – rotary…

So I just moved to this small apartment and I needed a small dining table but I didn’t find something I liked so I decided to make my own IKEA Hack table. The items I used were these: 1 -KALLAX Shelf unit, black-brown Price: 35.99$ 2 – CAPITA Leg, stainless steel (4 pack)…

Ikea items used: Kallax 2×4 shelf 202.758.85, Oppeby tabletop 802.815.05, Kallax casters (x3) 002.886.57, Gerton adjustable leg (x2) 602.616.26, #10×3/4″ panhead sheetmetal screw from Home Depot (x18) I first laid the tabletop on the cardboard on the floor facing down. I measured the Kallax shelf to see where I would…

3D CNC router machine for woodworking with 4th axis rotary table and 8 heads is designed for rotary wood carving, 3D relief carving with cylinder sculptures, wood crafts & arts, table legs, wood spindles, stair balusters, roman columns. The 3D CNC wood router can make 8 same projects at one time.

All the CNC routers can be shipped worldwide by sea, by air or by international express logistics via DHL, FEDEX, UPS. You are welcome to get a free quotation by filling up the form with name, email, detailed address, product and requirements, we will shortly contact you with the full information including the most suitable delivery method (fast, secure, discreet) and freight.

Designed to reduce the desired granulometry of wood residues such as pallets, wood boards, or other residues such as agglomerates, plastics, among others, generated in the most diverse production cycles, giving them a suitable destination.

Membrane filter press (used), immediately available, cpl. overhauled and clad in stainless steel, plate format 630 x 630 mm, 30 chambers, membrane mix package, drip-proof, corner inlet with closed outlet via a corner hole, food-safe plates, cake capacity 240 liters, 30 mm cake thickness, 8 bar filtration pressure, 10 bar post-press pressure, post-press unit is cpl. Installed in the system, also available with a suitable piston pump or compressed air diaphragm pump, press is mobile on wheels

Wynveen Cryloc Rotary screen is suitable for raw materials prior to grinding, pellets and crumbs, extrudates and expandates Maximum pellet diameter is 12 mm.