New toy: Setting up Colchester Student lathe

[M250cnc]

Sorry I'm not sure what you mean by 'at the same point'?

Chuck a piece of quality stock.

Check with your dti run out, mark the high point on the chuck with a marker pen and note the reading.

Take out stock then repeat the process and check the readings.

Phil



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[Jonathan]

Chuck a piece of quality stock.

Check with your dti run out, mark the high point on the chuck with a marker pen and note the reading.

Take out stock then repeat the process and check the readings.

Thanks, I'll do that tomorrow - getting late!

Just found this:

http://cgi.ebay.co.uk/BURNERD-7-5-3-...item2562cafe7d

Second hand might not be the best of ideas though.

[Jonathan]

I've done what you said, with a couple of different bits of stock a few times and yes the high point is always in line with jaw 2.

I think the jaws that are in there are soft jaws since there are machining marks on them and when I filed off the burrs it felt like mild steel.

I put the other (definitely soft) jaws in and found that one jaw was in the wrong place. It turns out that I have to mount them in the order 2-3-1 for them to meet at the centre. They seem fine then.

Found a C spanner on eBay to get the chuck off:

http://cgi.ebay.co.uk/Harrison-LO-Ta...item53e2a6afd7

I think that's the right one. Cheaper to CNC mill my own though.