counter sink/counter bore question

[Ww417]

i am trying to decide whether to use festool tools to do my countersink/boring or whether to purchase a set from either fuller or lv.  i was hoping someone might be able to briefly outline for me how the festal system works.  as i understand it, the two countersinks that festool offers can be used with the festool depth stop in order to create consistent countersinks... is that correct?  what about counterbores (i.e., holes with parallel sides)?  does festool provide a means of achieving those?

thanks, tony.

 

[tbellemare]

'Sorry, but unless I'm missing something, the countersinks won't work with the Depth Stop Chuck. It is designed to work with 1" long x 1/4" hex shank driver bits.

The Festool Centrotec solution to a counterbore would be a Zobo bit and they only go down to 15 mm diameter.

Tom

EDIT:
There are 3.5 mm & 4.5 mm bits that come integral with countersinks and depth-stop collars.

 

[Vindingo]

i am trying to decide whether to use festool tools to do my countersink/boring or whether to purchase a set from either fuller or lv.  i was hoping someone might be able to briefly outline for me how the festal system works.  as i understand it, the two countersinks that festool offers can be used with the festool depth stop in order to create consistent countersinks... is that correct?  what about counterbores (i.e., holes with parallel sides)?  does festool provide a means of achieving those?

thanks, tony.

The countersinks with integrated depth stops are great.  When working on a delicate surface, I like to hold the collar from spinning so it doesn't mar the surface.  The larger countersink will counterbore 5mm before the bit falls out of the shank, with the stop collar on.    

If you took the stop collar off (snap ring on inside of the collar) you would be able to go much deeper than 5mm.  

 

[Ww417]

Thx.. I guess I just don't understand how the bits with integrated countersink work... It looks like they just come in 2 sizes ( that seems very limiting, no?).  And can you separately control the depth of the pilot hole and that of the countersink?

Separately, is there anyway to control the countersink depth when using the 492520 and 492521? 

Thx, t.

 

[AlexThePalex]

Thx.. I guess I just don't understand how the bits with integrated countersink work... It looks like they just come in 2 sizes ( that seems very limiting, no?).  And can you separately control the depth of the pilot hole and that of the countersink?

They come in 3 sizes, 3.5 mm, 4.5 mm and 5 mm. Limiting? Well, you cover most screw sizes with this. Would have liked to see a 2.5mm also though and I guess a 6.5 mm wouldn't hurt. You can indeed seperately control the depth of pilot hole and countersink.

Separately, is there anyway to control the countersink depth when using the 492520 and 492521?  

Nope. Nothing but your own insight.

 

[Ww417]

Thx... That's very helpful.

 

[Jason Kehl]

Tony;

You can't control the depth of the counter bore. As you slide the collar that limits/adjusts the counter sink diameter, the diameter gets bigger.  In short, you can counter sink screw heads flush, but you can't drill a 3/8" diameter counter bore (for a number 8 screw) hole deep enough to sink the screw and plug it.

j

 

[Vindingo]

They come in 3 sizes, 3.5 mm, 4.5 mm and 5 mm. Limiting? Well, you cover most screw sizes with this. Would have liked to see a 2.5mm also though and I guess a 6.5 mm wouldn't hurt. You can indeed seperately control the depth of pilot hole and countersink.

I too would have liked a smaller size, and the ability to shorten the pilot bit more than you are currently able.   

Tony;

You can't control the depth of the counter bore. As you slide the collar that limits/adjusts the counter sink diameter, the diameter gets bigger.  In short, you can counter sink screw heads flush, but you can't drill a 3/8" diameter counter bore (for a number 8 screw) hole deep enough to sink the screw and plug it.

j

If you remove the bit from the collar, the max cutter diameter for the smaller size is 1/2".  This would be similar to Fuller's "E" style countersink.   

You can drill counter bore 12.5mm x 5mm with the collar still on, do you think that isn't enough meat for a plug? 

 

[Ww417]

but in this configuration... i understand what you are describing... you would have no depth stop for consistent depth?

 

[Jason Kehl]

"You can drill counter bore 12.5mm x 5mm with the collar still on, do you think that isn't enough meat for a plug? " 

Why drill a 1/2" diameter hole when a 3/8" diameter hole will do in a situation when hiding the hole is of importance? The Festool countersinks are the best quality I have used though.

j

 

[fdengel]

Strange idea of the day: future enhancement: option to equip the drill with a stop like the ones on rotary hammers / hammer drills?

That should be an easy, cheap enhancement that would provide a very simple mechanism for depth control without all kinds of fancy jigs.