Countersinks for Plastic?

[John Clutch]

Im going to order some tooling, and I was wondering what you would suggest for countersinks. Single flute or multi flute? Thanks

Clutch

[Cato]

Various ball cutters from Dremel make great countersinks in brass, ally and plastic. I use them in a regular variable speed drill.

[John Clutch]

Various ball cutters from Dremel make great countersinks in brass, ally and plastic. I use them in a regular variable speed drill.

Thanks Cato, I have a ton of dremel equipment and never thought of using the ball ends

Edited August 4, 2015 by John Clutch

[BigTallDad]

There are also tapered/pointed end bits for Dremels

[Roadrunner]

There are also tapered/pointed end bits for Dremels

Yep, if the material is thick enough, the tapered grinding bits should work fine.

[BigTallDad]

There are also tapered/pointed end bits for Dremels

Yep, if the material is thick enough, the tapered grinding bits should work fine.

I was kinda wondering that myself. I also do woodworking, which sometimes calls for countersinking (typically 1/8" or so) so I was curious how thick the plastic being used was. I've used .040" recently and would never dream of countersinking that.

[935k3]

I have been using these  http://www.harborfreight.com/center-drill-countersink-set-5-pc-60381.html

[Foxer]

I use just a regular drill bit when a countersink is needed ... it's a rare occasion for me though.

[John Clutch]

When possible, I would like to use flat head screws to hold certain assemblies together that can be hidden later. Like holding radiator to the radiator support or something like that.

[Cato]

When possible, I would like to use flat head screws to hold certain assemblies together that can be hidden later. Like holding radiator to the radiator support or something like that.

I'm doing the exact same thing right now on the Rolls with 00-90 screws. Made the countersinks in the (thin) steel hinges with the above Dremel small ball cutter.

[Roadrunner]

I use just a regular drill bit when a countersink is needed ... it's a rare occasion for me though.

For real tiny screws, I agree, a bit in a pin vise should be adequate.

[Cato]

I use just a regular drill bit when a countersink is needed ... it's a rare occasion for me though.

For real tiny screws, I agree, a bit in a pin vise should be adequate.

But not for metal hinges.

[Roadrunner]

But not for metal hinges.

Nope, probably not for that. For plastics and wood it would be great though. I can't even remember the last time I needed to do anything similar.

[Foxer]

I use just a regular drill bit when a countersink is needed ... it's a rare occasion for me though.

For real tiny screws, I agree, a bit in a pin vise should be adequate.

But not for metal hinges.

For sure not in metal! 

[935k3]

I have been using these  http://www.harborfreight.com/center-drill-countersink-set-5-pc-60381.html

This set works great. The small starter points are small enough for model building. I use them  to countersink the heads of straight pins I use for re-enforcing and pinning models

 

Edited August 6, 2015 by 935k3