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[old mart]

When you get it setup to run, incorporating an outrigger bearing to that long shaft would be a good idea, or at least a pulley as close to the crankcase...

[old mart]

0-80-0-80 is in 90 degrees increments, the 0 and 90 are at the same point. This would be repeated four times around the table top.

[old mart]

I bought an er25 R8 collet holder from China cheap and the runout was 0.003", so I just crossed my fingers and got another from a different Chinese...

[old mart]

Boring on the lathe would be the easiest method. make a fixture to bolt on a faceplate to hold the work parallel, and then mill the 1.54 deg angle on...

[old mart]

If you can measure the diameter and pitch of the thread, please post the figures. Also, because the forces are not very high, you could make a much simpler...

[old mart]

I was just posting pictures on the Model engineer forum in the UK of something I bought on ebay which has potential to be made into tooling for milling....

[old mart]

I wouldn't want to haul a car more than 10 miles in that thing.

[old mart]

I would make a jig to hold the work on a lathe faceplate and taper bore the 1.166" to 1.112" diameters. Of course it helps if the lathe has...

[old mart]

If you have bought the aluminium tubular, or figure of eight ready made for the 1/4" wire, and don't have a commercially swaged example to copy,...

[old mart]

I remember back in the 60's, my first motorcycle, a Norton Jubilee 250 used a 1/2" X 0.305 chain, the common size for bikes of up to 250cc those...

[old mart]

I would bet on bronze, grab them! Think of all the useful bits waiting to be revealed with a hacksaw.

[old mart]

Could it be a metric chain?

[old mart]

I got a couple of these on ebay, one for home, and the other for the museum workshop:
https://www.ebay.co.uk/itm/Tweezer-With-LED-Light-Hair...

[old mart]

You can get white Scotchbrite, it is more or less felt with no abrasive in it, designed to be used with the lapping compound of your choice.

[old mart]

I was just going to make a comment, when I noticed BCRider had pipped me to the post, almost word for word.

It reminds me of a time when...

[old mart]

Did you notice the way that just blipping the throttle a tiny bit when the tractor was stationary caused an instant kick in the opposite direction? There...

[old mart]

They are nornally polarised to only allow connecting one way round and also to prevent cross coupling when there are several close together. Common on...

[old mart]

If I power feed using the leadscrew on the Smart & Brown it is natural to get a helical cut equal to whatever thread pitch is set. The finest thread...

[old mart]

At work, we were frequently stress relieving steel at 190C for an hour or so and cooling in the ovens, it did help with most of the warpage, not all.

[old mart]

Could you post another photo showing a plan view? The second pic looks like the stop is in the vise jaws, but it isn't.