Drill bits with countersink?

[pe2dave]

Tks Droogs. FISCH Quick Change System Combined Drill & Countersinks | Buy woodworking tools
(though they took some finding!). Not toooo bad price wise, seem to have a very good rep.

 

[pe2dave]

ive got the erbauer set. comes with corisponding plug cutters.

Only ever used Axminster plug cutters, hardwood. #fail
Tks
Screwfix shows it, but no drill sizes? Odd.

 

[BHwoodworking]

the drillbits are 3 or 4 mm

 

[pe2dave]

Now I am confused.
This shows a number 6 drill. OK. Long time back I used No 6 screws. I don't think I've ever used a No 6 drill. This chart confuses me
even more.
What sized hole - metric please - will a number 6 drill make?

 

[Doug71]

Now I am confused.
This shows a number 6 drill. OK. Long time back I used No 6 screws. I don't think I've ever used a No 6 drill. This chart confuses me
even more.
What sized hole - metric please - will a number 6 drill make?

I would guess it means it drills a hole that a No 6 screw will thread in to? It think the drill is 2.4mm, the modern equivalent to a No 6 screw is a 3.5mm screw.

The biggest one says 3.2mm drill and No 10 screw, I would guess against the other 2 they have wrongly written drill instead of screw?

 

[pe2dave]

I would guess it means it drills a hole that a No 6 screw will thread in to? It think the drill is 2.4mm, the modern equivalent to a No 6 screw is a 3.5mm screw.

The biggest one says 3.2mm drill and No 10 screw, I would guess against the other 2 they have wrongly written drill instead of screw?

But clearance? For thread? Unclear is a fair description Doug?
Bad page data makes it worse?

Oddly the 'clarifying' pages don't help!

 

[Ukulele joe]

I've been using Snappy' for years and had no probs. All merchants selll them.best wishes to all
Lol

 

[Doug71]

I would say the Fisch ones are used to drill a pilot hole not a clearance hole. When I use them I normally have the drill bit pulled as far back as possible into the countersink so it doesn't snap then drill through with a larger bit after for a clearance hole, the small bit on the countersink just helps to keep it straight as they are often used for quite deep countersinks that you can put a wood plug in. I recently bought a heavier duty Trend one that does clearance holes.

Here are 2 I have, both Trend. The smaller one is probably equivalent to the Fisch, about a 2.5mm bit, drills a pilot hole and a 3/8" plug hole. The bigger one has a 5mm bit so drills a clearance hole and a 1/2" plug hole. You can see that the 5mm one is much heavier duty.

 

[pryere]

I have used these ones a lot, very handy.

https://www.rutlands.com/sp+drillin...-drill-and-drive-set-10-piece-rutlands+rw1111

 

[Nelsun]

I do like the Trend ones as they're pretty versatile... when you buy the extra bits for them like the countersink limiter for consistent depth:

They can burnish the material if you're heavy handed with them (and the hole cutter does fill up with dust) but they also do a slightly adjustable depth stop with bearings for such times: