Cutting a slope onto a disc of Sapele?

[VicS]

7°? Hardly critical is it? Don't bother cutting the angle. Use it as a pad. Chock it with blocks at the edge to achieve a horizontal surface and use Sikaflex or similar to fill the gap

but its a 12mm gap... quite a bit to just fill with Sikaflex

 

[Delfin]

As part of my PC monitor installation, I need to make a wooden disc (about 100mm diameter) to support the bracket for the vertical rail on the coachroof, as this slopes at about 7°. I've got a suitable bit of Sapele that I took off the chart table, but I'm not sure the best way to put a slope on one face.

Current thinking is to make a series of reducing-depth cuts with a router, then sand flat with a belt sander, before cutting the disc with a saw drill.

Any other suggestions?

This is what band saws are designed for. Start square, cut the angle you want using the band saw, then with the same tool saw the circle. Sand the edge round and you're done. Sounds like a 10 minute job....

 

[nigelmercier]

Something like this...

I like that, now all I need is a jig to make the wedges

 

[VicS]

This is what band saws are designed for. Start square, cut the angle you want using the band saw, then with the same tool saw the circle. Sand the edge round and you're done. Sounds like a 10 minute job....

You do you hold it to cut the angle? You 'd need some sort of jig to hold the work and I dont think any of the small bandsaws that I have seen would be able to accommodate something 4" deep anyway. Might be possible on a big workshop machine but I doubt if it would be possible a small DIY type machine.

So simple so straightforward to do with hand plane !! I dont believe all the "methods" I've read on this thread

 

[JumbleDuck]

So simple so straightforward to do with hand plane !! I dont believe all the "methods" I've read on this thread

Depends on your handplane skills. Mine are minimal, and it was quicker to saw than to acquire them.

 

[martinaskey]

There are various ways to do this but for accuracy and finish I entirely agree with Pete re: the router and jig. But as he says, might be overkill !
Look up 'scarf' or 'Scarph' joints to see how people cut them - Google is your friend
If you have a large plane you could make a basic jig like Pete's for the plane to run on rather than a router - that's the traditional approach.
If an exact finish isn't necessary then, as others have said. using a belt sander or plane by eye is possible but may result in a less than flat finish depending on skills / patience.
check grain rise direction before planing - "plane with the grain"
Have fun
M

 

[Amulet]

You do you hold it to cut the angle? You 'd need some sort of jig to hold the work and I dont think any of the small bandsaws that I have seen would be able to accommodate something 4" deep anyway. Might be possible on a big workshop machine but I doubt if it would be possible a small DIY type machine.

So simple so straightforward to do with hand plane !! I dont believe all the "methods" I've read on this thread

+1 This sounds like 15 minutes work with a sharp plane. If indeed it is not yet round I'd plane it before sticking it on the lathe or bandsawing it round.

 

[coopec]

Use a type of rasp that panel beaters use. Alternatively use a planer (as has been suggested) or use a belt sander. If you want a first class job take your time.

 

[Lakesailor]

If a job's worth doing... it's worth doing properly !

Nah. Just bodge it.

 

[john_morris_uk]

Depends on your handplane skills. Mine are minimal, and it was quicker to saw than to acquire them.

I agree! I do a fair amount of hand tool work and planing something flat and to 7 degrees isn't a job I'd take on lightly. Band saw or router on a frame as described. As I don't have a bandsaw, I'd be knocking up the router guide. The last time I cut a load of scarfs I knocked up a similar guide for my power plane. The joints even impressed me (as well as the surveyor who came to check them!)

 

[rogerball0]

Did something similar when i made the cheeks for my mainsheet track, just masked a line of the angle around the outside edge of each disk and ground back with a 24 grit disc on grinder whilst held in my hand.

roger

 

[ghostlymoron]

This thread is beginning to annoy me. Sledgehammers and nuts.

 

[Bertramdriver]

Too much angst. Too little action. String, pencil, ruler, protractor, angle grinder, flap wheel, flat sander. What's to angst about.

 

[nigelmercier]

This thread is beginning to annoy me...

Me too

Thanks for all the replies, plenty of options to consider.

I wish someone had suggested a CNC machine though, I really want one