Warco Major CNC build log

[Robin Hewitt]

I tried a micro grinder in a 20mm collet...it works well at 60.000RPM

Sounds tempting, I'm having a slight alignment problems with the double axial race on my tiny collet gizmo. Going to have to bolt a boring bar to the mill bed, cut the seat oversize in situ then fit a sleeve.

To do that I need to make a 1/2" BSW drawbar. Can't make the drawbar because my 1 1/2" die holder has gone walkabout. Can't make the Z axis bottom plate 'til I know if I need to fit the layshaft etc.

However the Z axis screw has arrived and fits inside it's sleeve okay.

More soon

Robin

[irving2008]

To do that I need to make a 1/2" BSW drawbar.

Do what I did and buy a 36" length of 1/2" BSW threaded rod and 4 matching nuts. Cut rod in half, screw into tool (through quill), place 1/2 washer, screw on 1 nut till tool retained, then a second nut and lock together. Remove bar and nuts together as one assembly, weld up the nuts, repeat and hey presto two draw bars! (one for mill, one for lathe as they share the same MT3 taper and tooling).

[Robin Hewitt]

Do what I did and buy a 36" length of 1/2" BSW threaded rod and 4 matching nuts.

Where did you manage to buy archaic studding in an ISO world? Enquiring minds need to know

[irving2008]

I got mine from Sowerby Bridge (on recommendation from RDG) Archaic.....are you incinerating it's bent :naughty: :D

RDG got it for me, think it was from the same place Kip.

Or here: http://www.thesitebox.com/Product/12...-12-x-3ft.aspx

or here: http://www.fastfixdirect.co.uk/code/navigation.asp?Diameter=1%2F2*&Thread=BSW&Length=a ll&Filtered=True&PageID=1&MainCategoryID=4&Product CategoryID=129