Trepanning Job? Not sure

Another option is chain drilling a ring of holes leaving a small web between themto try and keep the drill hole running true, then with a suitable length endmill plunge cut the webs away. I did this not long ago to remove a 2 1/2 inch disc from some 3/4 plate. The hole and slug obviously need cleaning up on the mill or lathe.
 
catsparadise said:
Another option is chain drilling a ring of holes leaving a small web between themto try and keep the drill hole running true, then with a suitable length endmill plunge cut the webs away. I did this not long ago to remove a 2 1/2 inch disc from some 3/4 plate. The hole and slug obviously need cleaning up on the mill or lathe.
Click to expand...
That would work. Then bore to size right?
 
MrWhoopee said:
Trying to trepan that deep is not for the faint-of-heart. If you do make it through, the slug will break your tool when it comes free and binds in the hole.
Click to expand...
Never thought of the flying slug, scary business that.
 
Would probably chatter like no one's business, but you could try a hole saw from one side, flip then finish from the other. After bore to size.
 
Last edited:

Speedy Metals Online Industrial Metal Supply

Go to SpeedyMetals.com for Stainless Steel, Tool Steel, Aluminum, Bronze, Brass, Cast Iron and Copper. SpeedyMetals.com is your online source for industrial metal supply. Call 866-938-6061 to speak with a representative.
www.speedymetals.com

Jeff here is the size you wanted.
You can order by length in inches. 4 inches $36
 
Last edited:
You must log in or register to reply here.
Back
Top