DRILL / MILL

[Tinyfxds]

We are getting a new tool vending machine and they have drill / mills stocked in the machine.  The only thing we've used them for is engraving and I don't really think they do the best job at it either.  I'm curious as to who has used them and for what applications they are used for.  I would think you'd be able to use them as a chamfer mill?? We have Garr drill / mills P.N. 57267

[FROZEN]

I have used them to drill, pocket out and chamfer a thru pocket in Aluminum. Worked awesome.

[The Cathedral]

We use them a lot. Mostly for chamfering and spotting in alum.

[Rstewart]

All I've ever found them much use at was Chamfering...

[Tinyfxds]

I believe the guy in charge is planning on replacing our current chamfer mills with these.  One small problem, if these come to a sharp point, then every program I've used with our current chamfer mill will be wrong.  Our current chamfer mill has a .020 flat on the tip.  Maybe these will have a slight flat as well

[civiceg]

Chamfering and engraving. I prefer 4 flutes, they tend to leave a better chamfer finish and no sharp hairs on the hard stuffs. Reducing the chip load really makes a difference when trying to deburr at 100 ipm. They do have a small flat but not .020, more like .003 on a 1/8.

[jlw™]

I like them a lot but I only use them for engraving and chamfering.

 

We keep .250 and .375 in our tool vending. The 1/4in I use to engrave or sneak in some tighter chamfers, its a 2 flute and runs at 5000rpm and 45ipm. The 3/8in is a 4 fluted chamfer machine. I run it at 5000rpm and 150ipm in pretty much any material. The last time I looked at a tool data screen it had 190 hours on it.

 

Have never once used one to drill or "mill".

[jeff]

I use them for chamfering, but lately I've switched to the 4 flute style so I can feed faster.

As for them being a sharp point, I believe I have mine defined as a .01 point on the tip.

[chris m]

We run Melin 4FL drill/mills all day long for chamfering in aluminum, stainless, steel, whatever. They are marginal for spotting/countersinking, and we only use them in soft materials for that.

 

C

[betts]

They do a decent job of popping a hole and then interpolating to finish size in a right angle head.  Been using MA Ford brand but several brands are pretty good.