Small cross hole deburring

[chris m]

We continuously struggle with deburring the intersection of small (M3, M4) tapped holes with small bores (1/4, 8MM, 10MM) and I am looking for some positive experiences out there that we can draw on.

 

For drilled holes we use a ton of Heule tools with great success, but they don't work for tapped toles.

 

For tapped holes in flat surfaces we'll often run a threading bar in an offset bushing and back-bore or use a double-angle chamfer mill and interpolate the hole, but those don't work for curved surfaces.

 

What other methods do you guys use?

 

C

[GoetzInd]

That's always a toughie. Have you seen those long flimsy lolipop tools for de-burring? Never used them but they look like they might work.

 

Mike

[chris m]

Mike, are you talking about the "Orbitool," or the ceramic balls, or neither? One of the problems we have is trying to get the tool through a 2.5mm hole. We are trying the ceramic ball on a Dremel right now and not digging it.

 

C

[RaiderX]

I have used cogsdill burr tools with success in similar apps. cross hole intersects are never much fun.

[chris m]

The "Burr-Off" looks like it might fit the bill, but typically the max chamfer sizes are not big enough with that type of tool. That being said; I'll ask Cogsdill directly, thanks.

 

C

[StanKroll]

Hi Chris,

 

I know the information is coming a year late, but may still be helpful for future applications.

 

Take a look at our Orbitool deburring tool. Designed for internal/intersecting crossholes.

 

We go down to 0.074", and can deburr threaded holes, angles, off-center, etc.

 

Everything comes with a full performance guarantee, can be returned no questions asked.

 

Thanks,

 

Stan Kroll

J.W. Done Corp.

www.jwdone.com

[Mjölnir]

http://www.osborn.com/usa/en/products/atb-products.html

 

Look for internal finishing brushes.