Hey there,
the day started with what I thought was good progress. I was making the brass parts for the top ball bearing assemblies. The thing is, after making 10 out of 12, I realized there was a problem and the brass tube at the top was too short...
It's difficult to explain what happened, I changed the assembly technique for the second run as the first batch was annoying and used glue, and, I don't like glue. But there was an error in my plan as I read my 3D model wrong for some reason. So they ended up too short!
This happens when doing runs... when you make a mistake, you make the same mistake on many parts, and of course, you always realize when you are almost done. It is part of the job, it is annoying and it's a loss of time and money for me, but it is what it is. Just need to fix it and move forward.
so, left part is too short, right part is corrected:
I needed to fix this as I was not going to give you guys innaccurate parts. But those parts are heat and pressure fit, so they are not going to come appart. Additionally, I needed to find a solution with what material I had left on hand. I had some extra 9mm brass stock, so I made thin sleeves to go around the existing tubing and make it longer.
3 on top are correct, 2 of those were the last two to do, so I cut some proper length material and made them correct right away, the 3rd one is the fix test that worked. Now I need to fix the 9 left with the 9 sleeves I made at the bottom.
for this, I put the assembly into the lathe again and I turn down the tube from 9mm diameter to 8mm until the sleeve almost fits:
then, I apply a good amount of heat to the thin sleeve and pressure fit it to the assembly with the mill vice (in progress here):
The result is an invisible fix and assembly, the only visible remnant of the fix is inside (on the right):
anyways, this will be completely invisible for you guys and the parts perfectly accurate, I just wanted to explain the issue and fix.
Overall, just a few hours lost for me and a 17cm extra length of 9mm brass stock used. Was just a bit disheartening when i realized the mistake, but that's ok now
cheers all