Bottoming tap

Stoney

Stoney

AzB Silver Member
Silver Member
Does anyone know where I can get a bottoming tap in the radial pin/ball screw/surgical screw size (3/8 X 6?) ? I have a ground nose tap (from Atlas) but it leaves to much unthreaded material at the bottom of the tap hole.

Thanks,
Stoney
 
Stoney said:
Does anyone know where I can get a bottoming tap in the radial pin/ball screw/surgical screw size (3/8 X 6?) ? I have a ground nose tap (from Atlas) but it leaves to much unthreaded material at the bottom of the tap hole.

Thanks,
Stoney
Click to expand...
you can grind the end of it flat
 
I've cut down 5/16 ( sanded down to around .300 ) dowel to .250 thick and push that down( with epoxy ) the forearm after tapping the hole for the pin.
For the shaft, I leave it alone as I only use the long pilot radial now.
 
bought two

bought two and ground one down to make it a bottoming tap. run one and use the ground one second. its worth the extra 37 bucks
robert harris
Breakpointques
 
JoeyInCali said:
I've cut down 5/16 ( sanded down to around .300 ) dowel to .250 thick and push that down( with epoxy ) the forearm after tapping the hole for the pin.
For the shaft, I leave it alone as I only use the long pilot radial now.
Click to expand...

Duh!!!! Simple - why didn't I think of that:o? Thanks, Joey.
 
rob@BPQ said:
bought two and ground one down to make it a bottoming tap. run one and use the ground one second. its worth the extra 37 bucks
robert harris
Breakpointques
Click to expand...

As BHQ also suggested this seems to be the long term solution. Joey's idea is great but there are some instances when I can not use the doweling method. Thanks.

Regards,
Stoney
 
You must log in or register to reply here.
Back
Top