I took Yamaguchi's class, and as fantastic as it was and as much as I learned, I didn't get to do the final prep on many fillets.
Part of it was me (I'd never brazed or worked with metal before), part of it was my choice of bike (lugless except the fork crown and seat clamp, a lot more work), but... I have to admit... I was 'that slow guy'. I basically got the frame all done and together late Friday, and didn't get to see him demonstrate much finishing work.
Now I'm on the more difficult places and at a bit of a loss, and don't want to spin my wheels with bad techniques. So, I'd appreciate some advice:
- Smoothing out between the chainstays & seat tube on the bottom bracket - how do you get in there? What specific techniques do you use? Tools?
- Rear dropouts: when I clean up around the slots in the stays (where the dropout tongues insert), should I clean them up a lot - i.e. steel visible except for the thin line where the braze is, squared off - or should I leave a slight curve there as well?
- Rear dropouts: how do you do to clean up the 'scalloped' cutouts on the stays where they meet the dropout? I did well on most of them - a slight concave shape - but a couple have big blobs that I want to carve in a bit, not sure what tools to use.
- Pits: I've found a few here and there. Do you fill them in with silver, or just tell the painter and have them fill them in?