How to deburr cross holes inside a bore?

[dml66]

I've turned, drilled and bored a part as shown below by first drilling and tapping the two cross holes, then turning the outside, then drilling and boring the inside. I did it that way because I couldn't figure out how to deburr the cross holes inside the bore if I turned and bored first. For the most part the bore is burr-free but, I think I could get a better quality bore if the tool didn't have to play whack-a-hole with the cross holes, same for the outside turn. Any ideas?

Thanks.

 

[benmychree]

There are tools to do that, they have a spring loaded cutter on a round shank that accomplish the task; unfortunately, I don't remember who makes them ---

 

[GrifterGuru]

Noga Reversible countersink deburring tool will do that...



Here is an evilbay listing for one...

1PC NOGA RC1000 RC2000 Mini / Medium Reversible Countersink Deburring tool | eBay

Model: Mini REVERSIBLE - RC1000. Type: countersinks deburring tool. Very fine tool for deburring both back and front side of holes. For deburring both back and front side of holes. Range 3-5.5mm. Range 5-10mm.

www.ebay.co.uk

 

[dml66]

Perfection!

Thank you, I'll order the Noga right away!

 

[GrifterGuru]

Perfection!

Thank you, I'll order the Noga right away!

I would suggest you check which size you need before you order one.

 

[7milesup]

There is an option from Amazon.

There are many other options (brands) that will work too. As Grifter mentioned, make sure you check the size.

In case you are wondering, you push the end of the tool in slightly, which allows the blade to swivel and then insert through the hole.

 

[GrifterGuru]

https://www.amazon.com/Noga-RC2000-Reversible-Countersinks-Deburring/dp/B006KLH0AQ/ref=sr_1_5?dib=eyJ2IjoiMSJ9.KlsFB8B-h-POV-yN63niZ7wtGEF2wqe6ujYQWE--rDIWizgZelpckyp_0o-4yI5SH6WrtvTDMcmmRFyK6zLy_4YKSC3x7-0sDYyDGRU-4LHVuwo4XSSHU9GMsc9gu0am3RZnreixrTJQ93q3BzC2d3kRDSDq16eVP4jouiih38UGrxfBSv8IAf2RW_UpohayPkQN1xpaTG3ZKu1uN9JNVPNzfdtY9IVNN2MhP6Ax0oY.pzRInOAn2vCVRA_1imfeweLIcA8wd5un78t4Tt4EcC8&dib_tag=se&keywords=noga+deburring+tool&qid=1708568421&sr=8-5

"Currently unavailable.
We don't know when or if this item will be back in stock."

Hmmmm, a dead listing...

 

[7milesup]

I wonder if it is because you are in the UK. The listing is current on my end and if I order it within three hours it will be here in two days.

 

[dml66]

I would suggest you check which size you need before you order one.

Good advice, thank you. The RC1000 Noga has a range of 3mm-55mm, the #6 hole I'm working with is 0.138" or about 3.5mm, I should be good to go.

 

[GrifterGuru]

Good advice, thank you. The RC1000 Noga has a range of 3mm-55mm, the #6 hole I'm working with is 0.138" or about 3.5mm, I should be good to go.

3mm to 5.5mm. Never seen a 55mm one