Gotta put a plug in for these

[choppinczech]

Recently I needed to make some precise countersinks in steel.

If you ever get a chance to use these single flute piloted countersinks, you won't believe how well they work.



They produce flawless, centered chatter free countersinks in steel, aluminum, plastics and fiberglass.



I'll never go back to these.

 

[Neshkoro]

I’ve used them before. They work great.

 

[AusBucket]

And if the edge goes off a little you can sharpen them by honing the bore.

 

[Dezolde]

Thanks for the tip. Does that mean you must have multiples w/ pilots the size of the hole or just use smallest pilot size to countersink and then finish drilling hole to size?

Thanks,
Jerry

 

[Indycars]

Thanks for the tip, seems I'm using a counter sink all the time.

The problem I have is there is still a ridge around the edge after using a counter sink on drilled
hole. Wish they made them in a very shallow angle.

 

[choppinczech]

Thanks for the tip. Does that mean you must have multiples w/ pilots the size of the hole or just use smallest pilot size to countersink and then finish drilling hole to size?

Thanks,
Jerry

McMaster Carr has a set with 1/4, 5/16,3/8,7/16 and 1/2. Each with it's own pilot.

Thanks for the tip, seems I'm using a counter sink all the time.

The problem I have is there is still a ridge around the edge after using a counter sink on drilled
hole. Wish they made them in a very shallow angle.

The problem I have lately is drifting off center. It bugs the crap out me. I guess I'm getting old. These are never off center. Even by hand.

 

[Dezolde]

McMaster Carr has a set with 1/4, 5/16,3/8,7/16 and 1/2. Each with it's own pilot.

View attachment 18710

Thanks, appreciate the source! McMaster Carr set indicates 82 degrees, which is stated as standard, but I've also viewed other offerings that have different angles.

 

[fletcherson]

Thanks for the tip, seems I'm using a counter sink all the time.

The problem I have is there is still a ridge around the edge after using a counter sink on drilled
hole. Wish they made them in a very shallow angle.

They are available in different angles, the traditional type. I sometimes use a round rotary burr (die grinder bit) or round stone attachment to obtain a shallow effect.

 

[Randy Steel]

As an alternative to the McMaster Carr 5-piece set ($177 + shipping). Champion provides a 9-piece set on Amazon for $130.

https://www.amazon.com/Champion-CSK...=through+hole+countersink+set,aps,88&sr=8-233

 

[Randy Steel]

Not sure why the Amazon website links not showing up. Maybe adding the parenthesis will allow the link to be seen.

[MEDIA]

 

[Indycars]

You can delete everything in front on the www, then it will show up but will be very long.

www.amazon.com/Champion-CSK-SET-1-82-Degree-Countersink-9-Piece/dp/B001TREYD2/ref=sr_1_2?crid=1NP9GAUSRY14D&keywords=champion+countersink+set&qid=1687898326&sprefix=champion+countersink+set%2Caps%2C136&sr=8-2

Or you can delete everything after "9-Piece/"

https://www.amazon.com/Champion-CSK-SET-1-82-Degree-Countersink-9-Piece/
.

 

[HenrysT]

https://www.amazon.com/Champion-CSK-SET-1-82-Degree-Countersink-9-Piece/
SORRY COULD NOT FIND THIS PAGE

 

[Indycars]

https://www.amazon.com/Champion-CSK-SET-1-82-Degree-Countersink-9-Piece/dp/B001TREYD2

OK, I should have checked the link, but no I had to ASSUME it worked.

You will have to look thru the link until you find "/ref" what's inside the quotes and delete it and everything after it.

 

[Neshkoro]

I've used them a lot over the years. They're nice because they usually don't chatter like a multi flute countersink does!

 

[old round fart]

The counter sink bit I use has no pilot stub. It is pointed and only has one cutting edge. One size fits all.