bambuko loco works 0-6-2 (Fowler)

[bambuko]

Drilling peg hole freehand on my drill wasn't entirely satisfactory
so I have decided to do it proper way on my milling machine, secured to holding fixture.
Here I am using a wiggler to position the hole exactly half way between (it's 0.4mm in one half and 0.4mm in the other):



Checking with centre drill (last chance to correct):



0.8mm dia 5mm deep:



I have spent some time sorting out a quill on my milling machine (it was stiff) - my fault, caused by overtightening the four bolts holding mill head.
When correctly torqued to 50 lbs/ft it has recovered and quill is now smooth and light

End result is quite acceptable

[tom_tom_go]

Bang on!

[bambuko]

Bang on!

thank you
now I have to repeat this performance six times for the cranks proper (this one is just a test), but before I do it, I want to make (and test) quartering fixture.
More to follow...

[bambuko]

My take on a quartering fixture.
V block in the centre (to locate the axle) and two stops, vertical on the left and horizontal on the right:



With the axle secured in place (one wheel is missing, but that's because it is just a test piece).
Brass clamps securing the axle, also makes sure the crankping is tight against the stop.



and ... ready to Loctite the other crank.
I guess, I will have to come up with some means of securing crank/crankpin against the stop?
Although I am reluctant to do it