Morning All. 
Got this tool finished up over the weekend. There were only a few more parts to make, starting off with the adjustment knob. This was just turned to the desired shape and hole drilled and tapped M6 for the leadscrew. I couldn't resist adding some knurling with the tool with the temporary nut, which was completely unnecessary as it has a tommy bar through it to apply torque.
The final part was a simple brass washer that goes between the adjustment knob and the rounded parts made earlier, presumably to avoid wear from steel on steel contact. However I decided to improve the design and also made two dished brass washers for either end of the spring.
And this is all the parts. They were then given a cold blueing to protect against rust (I think my cold blue solution is at the end of it's life as it came out quite patchy, but should be good enough for now) and the tool assembled.
Couldn't resist a quick test, and I have to say these are the best knurls I've ever done. No doubt I will be able to improve even more with some practice.
Got this tool finished up over the weekend. There were only a few more parts to make, starting off with the adjustment knob. This was just turned to the desired shape and hole drilled and tapped M6 for the leadscrew. I couldn't resist adding some knurling with the tool with the temporary nut, which was completely unnecessary as it has a tommy bar through it to apply torque.
The final part was a simple brass washer that goes between the adjustment knob and the rounded parts made earlier, presumably to avoid wear from steel on steel contact. However I decided to improve the design and also made two dished brass washers for either end of the spring.
And this is all the parts. They were then given a cold blueing to protect against rust (I think my cold blue solution is at the end of it's life as it came out quite patchy, but should be good enough for now) and the tool assembled.
Couldn't resist a quick test, and I have to say these are the best knurls I've ever done. No doubt I will be able to improve even more with some practice.
very impressive, well done!