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  1. Replies
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    Sorry is Wellseal. Missed out an l. My bad! Made...

    Sorry is Wellseal. Missed out an l. My bad! Made by Stag these days. About £8 a tube in the UK these days. One tube goes a long way.

    Search brings up plenty of hits. Amazon and E-Bay suppliers if...
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    Its clearly not made for a gasket so, assuming...

    Its clearly not made for a gasket so, assuming the case faces aren't abuse damaged, a sealer of some sort is the sensible options. Looks like there is a bearing in outer case so gaskets aren't best...
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    Na. Branson and Sugar are basically con men...

    Na. Branson and Sugar are basically con men Financier type folk. Number and concept manipulators both. Suck the money out of real businesses that ought to go into building the next good thing and the...
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    Indeed but its a bottom line item that shows up...

    Indeed but its a bottom line item that shows up on every monthly budget / finance review so its always in (mis)mangements face. Getting the bean counters to understand that cost accounting at that...
  5. Once upon a time sliding hefty things off the...

    Once upon a time sliding hefty things off the table onto a same height trolly seemed a wonderful idea.

    These days my ageing back and I would beg leave to disagree.

    Especially as I put my back...
  6. As Thermite implies once you have lifted the...

    As Thermite implies once you have lifted the thing out of the machine you still have to move it.

    My back of the envelope sketch shows one of those compact Chicom hydraulic jack'n boom hoists...
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    Yep. A thread micrometer is best treated as a...

    Yep.

    A thread micrometer is best treated as a calibrated comparator rather than an independent measuring device. When using the snazzy ones with interchangeable anvil sets its most important to be...
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    Yep. Area of a parallelogram is base x height...

    Yep.

    Area of a parallelogram is base x height ie 12 x 6 = 72 in that case. The triangle is half of the parallelogram so area is 36.

    Of course you can figure out everything else about the...
  9. Realistically this sort of lightweight control...

    Realistically this sort of lightweight control approach needs a different paradigm to what is currently used.

    Oversimplifying the mainstream approach is "one big processor" doing all the work with...
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    Thanks for the pictures. Some decent data there,...

    Thanks for the pictures. Some decent data there, especially when combined with the 0.001 rise per degree cited by Gordons source.

    As gregormarwick says its all a matter of generating enough...
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    Thanks for that Limy, never thought to look on...

    Thanks for that Limy, never thought to look on here.

    Post #16 from Gordon Long quoting his book as saying "the cam should have about .001" rise per degree of rotation." looks to be an interesting...
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    Design of "jamming eccentric" fixings

    So I have a practical back of the envelope level concept for a quick detachable dooby. I have an effective way to do the QD bit with a screw thread but its less than neat. More concept demonstrator...
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    Folk are overthinking this. Repair is easy but...

    Folk are overthinking this.

    Repair is easy but you have to be meticulous about setting up. Holding the caliper in the mill to be operated on is maybe the worst part. Time to haul out the two way...
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    If its a 6 mm pitch screw the Colchester dial is...

    If its a 6 mm pitch screw the Colchester dial is quite likely to be the same as that fitted to Peters M300.

    Attached is the relevant page from the later UK made Master 2500 which actually is a...
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    Ha. Only if its a very, very long step! Back...

    Ha. Only if its a very, very long step!

    Back around 1980 I built a scanner control system from standard Motorola CMOS ICs that included a unit which would effectively drive the threading dial. As...
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    If you can't find the factory data best...

    If you can't find the factory data best alternative is to find a machine with the same pitch screw and copy the set-up from that.

    If it helps my metric Smart & Brown 1024 has a 4 mm pitch...
  17. That appears to be a Colchester Master 2500...

    That appears to be a Colchester Master 2500 clone. Right down to the "quick-fade" data plate.

    There are decent pictures of the Colchester Master 2500 and Triumph 2000 (same except for speeds) out...
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    Picking up on Dualkits point about his hefty...

    Picking up on Dualkits point about his hefty turret maybe its a good time to finally scheme out and make that compact mobile crane thingy for dealing with things "heftier than I really care to lift"....
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    Customer was happy with the first one so I made...

    Customer was happy with the first one so I made the other three.

    Came out pretty well as you can see from the picture although the form tools were right on the edge of serious chatter. Lighting of...
  20. True but there seems to be no reason why a block...

    True but there seems to be no reason why a block style tool post cannot be made rapidly interchangeable just like a QC system. I was going to make the suggested rotating stud version until I lucked...
  21. Can't see the point of QC posts for insert...

    Can't see the point of QC posts for insert tooling only uses. Tip position is fixed relative to the holder base to sufficient accuracy so a block type post works just as well and is easier to make. ...
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    A "grid of holes" plate fixed on top of the...

    A "grid of holes" plate fixed on top of the existing table can work very well.

    I did such to a little BCA jig borer / mill. I found that machine very restricting as it has built in rotary table...
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    Interestingly T D Walshaw, writing as Tubal Cain,...

    Interestingly T D Walshaw, writing as Tubal Cain, refers to English or First Angle Projection in the book Workshop Drawing printed as No 13 in the Workshop Practice Series aimed at model engineers...
  24. Could it have been modified from a simple close...

    Could it have been modified from a simple close the slit system to a sort of wedge style by opening out the original locking screw hole?

    Consider a short cylinder nicely fitting in the hole, bored...
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    Why bother with hydraulics on a smaller machine....

    Why bother with hydraulics on a smaller machine. Stepper motor drive to the cross slide screw, a probe on the template and some seriously simple "keep the probe output at defined zero" electronics...
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