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9th April 2014, 04:01 AM #16.
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BJ's got it, but just in case.
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9th April 2014, 08:57 AM #17GOLD MEMBER
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WCD's would be my preference
with the one from Bobl i think the two locking levers(for the sake of a better word...cos i dont know what else to call em) shown with movement arrows in last pic may become permanently distorted and bind ...the rotating nut locking mechanism will always be tightened to a differing torque accelerating the eventual binding?
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9th April 2014, 09:28 AM #18
Ok thanks guys
I was not sure if the white in your pic was material or a void.
Crystal clear now.
Well this looks a very viable proposition to me.
I thank you all for your input. I will let you know of my progress. As this is a wood lathe I may make up a model from timber first though drilling the 44.5 mm holes nice and true, straight and parallel may be an issue.
Dave the turning cowboy
turning wood into art
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9th April 2014, 09:31 AM #19.
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Manufacture tolerance has to be good, but I've had a similar sort of locking mechanism to lock the wheels on my small Alaskan chain saw mill for the last 4 years without a problem.
The trick with these locking mechanism is they need only a light touch to provide massive clamping on the bars but this reduced amount of force may not be enough to lock the T-slot.
A simple design with a zero chance of binding is this one.
Easy to make too - just drill the holes through the metal block and then cut the block in half.
I just realised the horizontal void doesn't go through the middle of the bars but I think you get the picture.
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9th April 2014, 09:58 AM #20GOLD MEMBER
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9th April 2014, 12:27 PM #21
Hey have you been looking in my head? It's not really my idea, but it was what I would suggest. The record bar bed lathes used a simplified version of it. Not only is it easy it gives equal clamping on the bed and t slotted part, unlike the wedges which would be tight long before the t slot part would be.
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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