The Shop > Tools
The Eddgwick arrived!
DMIOM:
In terms of deciphering eroded lettering, if you had the patience you might want to to try RTI (Reflectance Transformation Imaging) - its being developed/used by archaeologists for tasks like teasing faint engravings from rock surfaces etc. Info & free software here
Dave
vtsteam:
Well we can intuit that it would probably say something like:
Take first cut when pointer is opposite proper mark. Repeat
for subsequent engagements.
For whole even number threads engage at any mark.
For whole odd number threads engage at any numbered mark.
For threads ending in 1/2 engage at the same mark.
For any odd Whitworth pitches and all metric threads keep guide.
screw nut engaged and return saddle by reversing feed clutch.
mattinker:
Thanks Steve, that looks right, I'll try that when I get it back together!
Today I got back to it,
Cross drilling 1/4", a bit that I still have after being away from the Imperial system for 36 years!
Sorry about the shake! Milling the key way.
Fitting the key, I thought of you Steve, a nice filing exercise!
I had some trouble boring and tapping the centre of the shaft to take the dial friction screw. First thing I had trouble drilling 5mm to thread M6 for the adjuster screw. I then had trouble tapping, I concluded that I had hard spots where the original metal was. I was afraid to snap the tap, so I drilled it out to 6mm with a carbide tipped masonry bit re-sharpened to cut metal and tapped for an M6 helicoil, I'm home I thought. The grub screw wouldn't got through sticking, dirt maybe, so I tried a tap in it, and then, **** happens as they say, I broke the tap trying to get it out! I can only think the it caught on the helicoil it would go neither in nor out, I'd been so careful! So far, my efforts at breaking up the tap have failed, there's 25mm 1" in there below the surface. I think that my way out is drill or grind from the side where the helicoil is, get the tap out, weld up and machine!
Regards, Matthew.
vtsteam:
Oh nooooooooooooo.........! :(
Pete.:
Damn that's bad luck. From here I'd be most tempted to cut the shaft off beyond the cross-drill, counterbore it then make a whole new end which plugs snugly in the counterbore then weld the pair together.
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