Nice video. I have a challenge you may be able to help. I have a road bike and it’s bottom bracket shell is 40.4mm. But it should be exactly 40.95 on both sides. To ream the bb, I would have to buy an specialized tool which is more expensive that the actual bike frame. De holes must be parallel to each other and perfectly round. Can you imagine and diy idea how to solve this? P.S. I have a press fit tool that drives the bearings in the shell, if it may be used in any way.
Hi Brian, Would you happen to know how I could enlarge a small hole sideways by only 1/8 inch for a drawer pull? I never did any woodworking and don't want the drill to slop around while I would be trying to enlarge it to the left in such a little amount of a hole. Thanks. Yvonne
For reaming aluminum and other soft metals you should have some success making the reamer from tool steel and heat treating it. Also, 3 faces should give sharper cutting edges than 4.
Nice video. I have a challenge you may be able to help. I have a road bike and it’s bottom bracket shell is 40.4mm. But it should be exactly 40.95 on both sides. To ream the bb, I would have to buy an specialized tool which is more expensive that the actual bike frame. De holes must be parallel to each other and perfectly round. Can you imagine and diy idea how to solve this?
P.S. I have a press fit tool that drives the bearings in the shell, if it may be used in any way.
expandable reamer
Let me know what you think, and thanks for watching! Take care.
Hi Brian, Would you happen to know how I could enlarge a small hole sideways by only 1/8 inch for a drawer pull? I never did any woodworking and don't want the drill to slop around while I would be trying to enlarge it to the left in such a little amount of a hole. Thanks. Yvonne
Any suggestions for making one for Aluminum
For reaming aluminum and other soft metals you should have some success making the reamer from tool steel and heat treating it. Also, 3 faces should give sharper cutting edges than 4.
This doesn't cut, it scrapes, similar to a gunsmiths or clock makers square reamer.