![]() ![]() I decided that I would like to add a collet chuck set. ![]() I brought my 500 VLS a while ago now and so far all the turning I have done has either been with the 3 or 4 jaw chucks that came with it. Or perhaps a group member has one of the elusive 5C or MT5 to MT3 headstock adaptors that Boxford used to supply for the lathes that they could run a micrometer across for me. So before I go down that route am hoping that one of the group has encountered this issue before and can advise what the taper actually is. I have to admit I am not really that confident on taking the measurements he was asking for. He said he would come and have a look himself but he is based in Nottingham a good 3 hour drive away and we are bot effectively in lock-down at present. ![]() At this point he started to explain some of the ways I could actually setup to measure the taper accurately with the tools I have available to me. However when I spoke to my friend and he looked at the spec for the MT4.5 and the MT 5 tapers he pointed out that I have not really pushed the collet chuck in properly and over the length it fitted this method may not actually be good enough to actually tell. I have covered the part of the taper that fits in the headstock with "Blue" and it seems to be a good fit. ![]() I have a friend who has access to a cylindrical grinder and has said he will machine it to size for me but I would need to be sure what he was actually machining to. Back to google and some more research and I find mention of a MT 4.5 standard, a short MT 5 standard and a lot of confusing information suggesting that the headstock taper may have been made up by the different manufactures and could be something in between an MT4.5 and and MT5. It only went into the headstock about half way along the taper length. This arrived but when I tried to fit it I hit a problem. So starting with my usual go to place to find out about my lathe (.uk) I re-read the section on the VSL and the 500 VSL which references the following: " Later models were much improved by the fitting of a larger 1.375" bore spindle with a hardened and ground American Standard L00 taper nose and a 5-Morse taper socket" Great I thought and promptly ordered myself an MT5 ER32 collet chuck from Chronos. Looking at my options I decided that it would be good if I an get an ER32 collet chuck for the lathe as I already have ER32 collets for my mill. ![]()
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December 2022
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