- Joined
- Apr 23, 2018
- Messages
- 6,442
Using a plunger with a salvaged micrometer head would be real sweet...
I just did some I.D. lapping the other day. I chucked up and turned a piece of steel (12L14 was handy) to dimension, and used 340-grit lapping paste to lap the parts. I powered the lap in the lathe and hand fed the parts. If I were to make lapping tools that were meant as durable equipment, brass or aluminum would be good for the lapping grit to embed into. Since it was a one-time, I didn't care, and the finished product came out great. If you don't have the right reamer, laps work well, but you need to be within a thou on your dimensions so that you lap minimally to achieve the result. Laps get inaccurate when you are relying on them to remove material.
I just did some I.D. lapping the other day. I chucked up and turned a piece of steel (12L14 was handy) to dimension, and used 340-grit lapping paste to lap the parts. I powered the lap in the lathe and hand fed the parts. If I were to make lapping tools that were meant as durable equipment, brass or aluminum would be good for the lapping grit to embed into. Since it was a one-time, I didn't care, and the finished product came out great. If you don't have the right reamer, laps work well, but you need to be within a thou on your dimensions so that you lap minimally to achieve the result. Laps get inaccurate when you are relying on them to remove material.