show me your baltic birch plywood finishes

[zigzagflux]

Roundover bits do really well with multilayer ply.

 

[powderfinger]

Gel stain over a dewaxed shellac seal coat, finished with laquer.

 

[wilbur-x]

Made by a diy colleague nearby:

 

[wilbur-x]

( RAAL & ScSp):

 

[mhenschel]

@tcpip
I've been thinking for a while that a multi-radiused "thumbnail" bit could perform better than a comparable (3/4") single-radius roundover. But yours is the first baffle that I've seen implement it.

What was your thinking in choosing this profile? How has it performed?

 

[bambadoo]

Well ended up painting them...

Used to be "natural"

 

[ndp]

Ok it's not a speaker - but an amplifier, but you can see the texture of this fantastic material (I'm from the Baltics myself )

Osscar that's beautiful. I love the look of exposed baltic birch edges when the ply's are nice and tight.

For those of you using round over bits/chamfering bb edges.
If you hit a void or have a little tear or chip out do you fill it with anything before applying a finish?
Or do you mostly live with the slight imperfections?

Me and pops toyed with the idea of firing the shaper up to cut some edges. I might play around with some scrap this week.

 

[a3cervo]

these were finished with amber shellac:

 

[mhenschel]

@a3cervo
Lovely. Any particular advice about preparing and applying that finish?

 

[tcpip]

@tcpip
I've been thinking for a while that a multi-radiused "thumbnail" bit could perform better than a comparable (3/4") single-radius roundover. But yours is the first baffle that I've seen implement it.

What was your thinking in choosing this profile? How has it performed?

Speakers are not yet completed, the lockdown has suspended all my audio work. BTW, my Baltic birch sheets are 1", not 3/4" and the roundover bit has rounded the full 1" thickness.

 

[a3cervo]

@mhenschel: thanks...for these pair i wet sanded a couple of coats of BLO to pop the grain,letting it dry for at least 24hrs in between coats. then i applied 6 coats of shellac if i remember correctly.built these about 4yrs ago.

 

[mhenschel]

@tcpip
1"! That's a heck of a bit. I don't think I've seen one that big.

Who made it and what's the model number please.

 

[mhenschel]

@a3cervo
I'm in awe. Thanks for sharing.

 

[a3cervo]

last year i built some acoustic panels using malaysian regular plywood and did a natural finish on them using BLO and shellac:

 

[tcpip]

@tcpip
1"! That's a heck of a bit. I don't think I've seen one that big.

Who made it and what's the model number please.

I buy some of these bits from eBay.com or AliExpress. I don't bother to keep track of the brand. Can you please check there in a month or two, after more sellers come back online there?

 

[JSS]

This is the biggest one I found. Got this years for my speaker build. Wider than the bud can [emoji23]