How to mitre cut 12/4 mahogany

[Wade Lippman]

Bandsaw?
Do it your method and clean it up with a edge sander?
Post here asking if anyone has a 12" saw?

[John TenEyck]

W/o a handplane I would cut as deep as possible on your TS, finish the cut proud with a handsaw, then file and sandpaper referencing off the TS cut. You could do it with a router mounted on a base that references off the TS cut, too, but there's a lot more chance of tearout trying that; none if you do it manually.

John

[andy bessette]

Best approach would be to put enough of a radius on the finished joint's corner, instead of a dangerously sharp corner. That way you can simply cutoff the small portion left by your table saw.

[johnny means]

That would ruin the waterfall with a band of endgrain.

[Bernie May]

I agree with Prashun. One side of blade, flip piece, and run through other side of blade.

[mreza Salav]

I would do as you said your self: deep cut with table saw, cut the rest (proud) with a hand saw, jig up a small router and use a flush trim bit from the other side to make it flush with the table saw cut surface.

[Rob Price]

Use a sled on the table saw....... and cut with the blade straight up..... and material angled at 45%.......

My vote. Sled.

[mreza Salav]

My vote. Sled.

if the blade doesn't have enough depth, how would a sled make much of a difference? the cross-section of the cut is simply more than half (minus arbor) radius of the blade, so it doesn't matter which one is tilted. Difference will be very small.

[Rich Engelhardt]

I'd just build a tall miter box & cut the whole thing by hand. It might need some final cleanup, which with the addition of a tall fence extension on the jointer's fence would be a simple quick way to do it.

[Peter Kelly]

[Rob Price]

Depending on the trunion mechanism often the cut depth is less when the blade is tilted to 45 degrees- more of the blade is below the table.

[Mike Cutler]

Use a sled on the table saw....... and cut with the blade straight up..... and material angled at 45%.......

This gets my vote.
You're going to end up making some type of jig to do this. It's actually a jig you should have anyway.

[Patrick Kane]

Without a handplane or a few other basic tools, i have to suggest the best method might be begging/paying someone local to do it. For example, for $20 id make that cut on my slider for you and send you on your way 5-10 mins later with a perfect joint.

[Rich Engelhardt]

Stick a piece of newspaper between the cauls and the pieces of wood in that video & use Elmer's School glue and removing the cauls becomes a minor task instead of a sanding mess.

[Wade Lippman]

This gets my vote.
You're going to end up making some type of jig to do this. It's actually a jig you should have anyway.

How exactly would you make that jig?