The Craftmans Shop > New from Old

Dore Westbury Mk1 Mill Restoration, finishing and one or two mods.

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vtsteam:
Yes I was asking what is the size of thfe bearing and the housing, not the other bearing, and in thousandths at leasr, not hundredths.

awemawson:
Looking at the list of bearing sizes on the Simply Bearings site, 2.24 IS one standard as is 2.25 so I reckon you've been supplied with the wrong size

Canobi:
The fault lies with me, they were indeed touted as 2.24" (from simply bearings in fact) and being a noob I just assumed they would be the same as the old ones.

Took a fair bit of searching last night and this morning but I finally found and acquired a pair of tolerance rings that were the correct size for my bearings, so I'll be carefully extracting the new races from the quill later.

Right now I'm prepping for hot blacking/brassing some of the bolts and levers. I just knocked together a quick and dirty rig using a dead three jaw chuck that came with my lathe for holding them while I heat and coat them. The chuck spins freely on the bar so I can turn it as I work on the parts:

Canobi:
Hey guys  :wave:

I heat blacked the column support casting bolts today and my rig turned out to be very useful.

Wasn't too happy with the results of the first try though, was more dirty brown than solid black. I changed it for a fresh silver one and this time I brushed off a dirty white looking oxide layer that develops as it gets hot.

I also sunk more heat into it, this time I waited till the bolt head went from turning a dark straw to just touching the blue zone temps, then hit it with the oil cloth and then the torch to scorch dry the oil in an alternating pattern.

The black built up relatively quickly after that and I found the first sign of a good take is that as the oil dries, it develops a matt finish and dries really quick, then after a short while, dries to a nice gloss finish.

At this point the blacking is essentially done, but for a deep black and slightly more enduring coat, I added a further 15 wipe overs and then dropped it in the water to cool off.

They turned out exactly as I'd hoped, which is a fair achivement on a first try:
0


Here's how they will look once the column is fully assembled:



Next step is to brass and black the levers, gotta feed the myself and the sprogs now, of there's time after dinner, I'll be back with more this evening  :thumbup:

beeshed:
Is the brass finish on the cast iron electrically connected to the base or is it over an oxide layer?

Don't wish to carp about videos but please bear in mind that youtube doesn't  have a fast forward like a PVR so you need to do the fast forward through the boring repetitive bits for the viewer while making the original edit.  :ddb:

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