Help Needed on solving a way to do it

[QbnDusty]

Hi Guys.
Got a problem I don't know how to solve.
Have to drill 35mm holes in timber, various ways of doing that but then have to make a 45 degree chamfer round the edge of the hole. Perhaps a tool exists, cone shaped abrasive device used in a drill press or what ever. but have not seen anything.
Anyone any ideas.
Regards

[murray44]

A router? Might be fiddly, not sure how many you need to do.

[gerhard]

Hi,

you can use a deburr-tool for wood and metal in your drill (first pic). I've seen diameters up to 40 mms. Or you can use a tapered/mitered edge router bit with built-in ball bearing (second pic). The bearing acts as a guide. You drill the hole and set the bit depth depending on the desired width of the tapered rim. Than you slowly gnaw away at the edges, working in circles, till the bearing touches the hole's entire circumference and makes sure that the rim has the same width all around the hole.

Greetings

gerhard

[addy paddy]

Dusty its been asked before how many holes and what species? Perhaps just a holesaw to cut through and depending on size of chamfer required small router/laminate trimmer with chamfer cutter with end bearing to finish.

[gerhard]

Chamfer, that was the word! One of those finesses you don't know when English is not your first language... but i keep on learning

[Mr Brush]

I've done a similar thing....the holes were 40mm as I recall, in 20mm thick blackwood.

Did the holes with a Forstner bit - these are available up to sizes you'd hardly believe, but you will need a very slow speed on the drill press to use them.

For the chamfer I used a small 1/4" shank 45 deg bit with guide bearing (as suggested by gerhard) in a Makita trimmer, the baseplate of which is big enough to prevent it catching in the hole ! Gradually increase the depth of cut until you have the desired effect.

[QbnDusty]

It was my daughter who asked if I could drill and chamfer a large hole.
Under intense interrogation I have a square piece of thinnish!!! wood with the large hole in the center. A smaller hole is drilled in a bit from each corner and a slot cut from the hole to the corner. The idea is that the large central hole fits over the neck of a wine bottle and wine glasses hung from the four smaller holes. A friend has one she is going to borrow so I can get the dimensions.
Seems a bit wacky to me but family is family.
The router chamfer bit with a guide bearing seems the way to go but I hope she wants a couple of hundred to justify the cost.
Many thanks everyone.

[batcat]

here's some of what i think your daughter is talking about
as you can see, quick & easy to knock out and no need to chamfer
you can be as 'artistic' or 'agricultural' as you want.

[QbnDusty]

Thanks Bobcat, now I can see what its about.
Don't like the 6 glass version, not enough wine in a bottle for 6.
Many thanks

[QbnDusty]

Sorry Batcat,not bobcat realized it was wrong after I posted.
On thinking about it, perhaps the chamfer on the holes may give more stability on the shape of the bottle neck as opposed to a sharp edge.
Regards

[batcat]

LOL...not a problem, I have been called a lot worse and yes on the chamfer.

[lenco]

Thanks Bobcat, now I can see what its about.
Don't like the 6 glass version, not enough wine in a bottle for 6.
Many thanks

What do you mean not enough wine in the bottle.- I thought us workers of wood were supposed to be inventive. What you do is slip the glass holder over the neck of a 'goon.