It got worse
by John
After yesterday’s post my readers were very supportive and nice. Made the post worthwhile. Thanks readers!
So today, I machined off the bent shaft, silver soldered on a new bigger one, and re-machined the damaged brake drum. It looked resurrectable.
BUT!. There was a line in the gear cutting program which I had checked, but not noticed. It said Y0. 3 lines earlier the program said G0. If you program CNC you might make the connection. With 3 lines difference, I did not spot the problem. But this was the result….
The CNC mill did what it was told to do. Really buggered about 3 days effort. NOT impressed with Mach 3 Wizards for gear cutting.
I will look at it again tomorrow, to see if it is fixable, again. Excuse my French.
johnsmachines 
Golly that looks way worse than I could see on today’s Zoom session.
Dunno John, it might be worth the time and effort of filling the gap with either Silver Solder or brass brazing rod. With some quite critical setting up you could hopefully re-cut those teeth.
Here’s hoping for you to succeed and looking forward to the next intriguing episode.
JB
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Feeling a bitter happier this evening. Plogies for the bad language.
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Whatever happens, attempting these little pieces of metallic jewellery beats the heck out of bio-degrading in front of TV.
I confessed about my collection of “scrappers” to a highly accomplished live steamer here. He has been a great mentor to me in recent times.
“Oh” said he, “I’ve got enough of those to build another loco”…. and at 81 he is doing just that.
Love it!
Tim
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It is good to confess our woes. Seems that most of us share the experience of stuffups. I did manage to fix that mangled gear. See latest post.
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81….? so I could have another 10 years of this hobby. Great. Or I could endure another 10 years of stuffups. Great?
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