I need to make a few parts with a .226 bore about 1 in deep. There will be a couple of cross holes at 90° in the bore.
I have made similar parts with a larger bore. I drilled the bore undersized, drilled the cross holes, the bored to final size. I still had a few small burrs to deal with where the cross holes met the bore. I usually final lap the bore to size with a split rod, emery, and some oil.
A split rod isn't practical on a .226 hole, least doesn't seem so to me.
I want to see what you guys think of this.
Drill bore undersized. Ream to just under final size. Drill cross holes. Ream bore again with same reamer to remove burrs from drilling cross holes. Final lap to size with brass laps and lapping compound.
Would this work reasonably well? I need final size to be .226-.2265.
Would drilling cross holes undersized then reaming to final size reduce the burrs in the bore? Cross holes are .065.
I have made similar parts with a larger bore. I drilled the bore undersized, drilled the cross holes, the bored to final size. I still had a few small burrs to deal with where the cross holes met the bore. I usually final lap the bore to size with a split rod, emery, and some oil.
A split rod isn't practical on a .226 hole, least doesn't seem so to me.
I want to see what you guys think of this.
Drill bore undersized. Ream to just under final size. Drill cross holes. Ream bore again with same reamer to remove burrs from drilling cross holes. Final lap to size with brass laps and lapping compound.
Would this work reasonably well? I need final size to be .226-.2265.
Would drilling cross holes undersized then reaming to final size reduce the burrs in the bore? Cross holes are .065.