A very short (JT2) project

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RobWilson:
I likes photos I do :D

Nice one John :thumbup: , for future reference http://www.arceurotrade.co.uk/Catalogue/Chucks/Drill-Chuck-Arbors/MT3-Drill-Chuck-Arbors-with-Tang

Rob

jcs0001:
Rob

Thanks for the link. Cannot understand why we can't get a similar item locally (within Canada) anyway. I need a few other items for the shop (don't we all) so will put in an order locally in a day or two. Should get it within a week or 10 days I expect and then see if I can get a good surface finish.

John.

sparky961:
For home shop use without abuse don't worry about hardening. I made an MT3 to JT-something years ago and it runs truer than the commercial ones at my work where they get abused.

jcs0001:
Not sure what is going on as I posted a reply and it has disappeared into the ether :doh:

Anyway, as mentioned in my earlier yet missing post, I had a moderately bad day in the workshop yesterday. Started by attempting to true a 16 in. wood bandsaw wheel and drove a wood turning chisel into my finger. The wheel was made up of two layers - one of baltic birch ply and one of some very nice douglas fir ply. The baltic birch turns nicely but the douglas fir turns like crap - it's hard as nails. I also determined that my wheel had too much wobble and will have to build another. At that point I was beginning to wonder if shop work was my forte :med:

My busybeetools package arrived so I thought I'd rescue the day by turning the jt2 taper on the mt3 blank. I spent an inordinate amount of time trying to get my compound indicated to the right angle. A variety of things seemed to be working against me and I ended up with it somewhere in the neighbourhood of correct. The blank end was large so I figured I'd turn it down until I could start to trial fit the end into the chuck. One positive was that the steel in the blank turns beautifully and my high speed steel cutters worked really well.

Once I got the arbour so that it would fit into the chuck a bit I found that indeed the compound was not accurately set. A bit of thought and a utube video or two revealed that I could use the barrel of the tailstock as a fixed point and thus turn the compound by very small amounts measured with a magnetic based indicator mounted on the compound (this is likely very basic for most all others on the forum however to me it was a great revelation - almost a religious moment - well not quite). :D

I also used a felt pen to mark the arbour and was able to get the taper dead on before I ran out of stub.

Here it is in all it's glory:

It fits nicely into the tailstock now with very little hanging out. I may cut or grind the end off a bit but for now it's very usable.

Thanks,

John.

sparky961:
Job well done.

Almost all of my serious cuts and bruises to hands have been from hand tools. Although I know they are the source of more injuries than power tools it still happens from time to time. More recently its a case of the back of my hands on drills in the tailstock or other nearby cutting tools.

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