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What’s on your lathe?

I suspect you would have better results with waiting several weeks or more. Anything that has penetrated is going to take longer to polymerize (particularly after surface polymerization).

I suspect you're right..... :)

I also suspect it could take much longer than several weeks!

The Watco DO info says it "seals" the wood and hardens. That is the prescription for a longer wait I think.....

Anyway, I have another spalted bowl that I'm going to try using a thinned Titebond III wood glue as a medium instead of the DO.

Stay tuned.... :)

=o=
 
My latest experiment was not particularly successful, but provided some answers to whether applying Danish Oil as a hardener to spalting prior to finish turning is a good answer to the question of how to treat severe spalting...

This Maple burl bowl is heavily spalted and excessively soft in places. After seasoning the roughed bowl, it was brought to round. At this point, I applied a heavy coating of DO, with the hopes that the spalting would become hard enough to turn......(providing sharp tools presented well is a part of the equation). After waiting a few days for the DO to cure, I then attempted the 2nd finish turn. What I found was the DO does indeed harden to a turnable degree......ON THE SURFACE. Below the surface, the DO becomes gummy and smears on the surface as well as severely clogging the sandpaper. I wasted a lot off sandpaper dealing with this, but I eventually did acquire a decent sanded surface.....ready for final finishing.

I'm not sure the drawbacks are worth the effort to attempt hardening the spalted wood with DO.....but, it certainly is doable :)

=o=
I have much better results from soaking with lacquer and letting it dry for a week or two. The Minwax Wood Hardener does a decent job too but is softer than the lacquer. That I usually apply several times as I turn just to get complete penetration.
 
I have much better results from soaking with lacquer and letting it dry for a week or two. The Minwax Wood Hardener does a decent job too but is softer than the lacquer. That I usually apply several times as I turn just to get complete penetration.
i too have had good results using 1/2lb cut shellac 1oz shellac to 1 pint of alcohol as its so thin it will soak it right up. i have a 3 gallon bucket half full just for this i dip it in then give it a week or more to dry
i have also dipped it, then put in my vacume oven/chamber, pull a vacume & release and it all gets sucked in deeper
 
Sanded the Padauk to 320, mainly to blend everything and see the wood in a bit better fashion. Next step is to carve, and then create the other components for the piece.

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I also started working on another mushroom-style captured spin top. Black Cherry. Nothing too spectacular with the wood grain here, so this one will get a bunch of color on the exterior (I'll carve the interior to look sort of like gills). Because this is side-grain orientation, the little 3/8" tenon is somewhat fragile (risk of shearing off). To add a bit more support, I like to drill a hole and add a small dowel that assists in connecting the bowl to the finial/pull I will glue on. The Jacob's chuck helps center the dowel when gluing. You can also see the acorn nut bearing in the photo of the interior. This gives a better spin.

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Chessmen, Black side nearly complete, a bit unusual as they are converted pillar candle holders in Blackwood, Sally Wattle and Melalueca
 

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Hickory (I think)? Bowl once turned this morning. 12" x 5.5" in size, one coat of Danish Oil natural. First time trying a bead design.

Hey Karl, FYI these posts you’re replying to are from 2023. Nothing wrong with replying, but the final pieces may already be posted somewhere.
Thanks - I’ll check dates from now on. I am new to AAW forum as well as to woodturning. Got message that I wouldn’t be completely “legal” until I logged 10 posts - just trying to get up to speed :-)
 
I also started working on another mushroom-style captured spin top. Black Cherry. Nothing too spectacular with the wood grain here, so this one will get a bunch of color on the exterior (I'll carve the interior to look sort of like gills). Because this is side-grain orientation, the little 3/8" tenon is somewhat fragile (risk of shearing off). To add a bit more support, I like to drill a hole and add a small dowel that assists in connecting the bowl to the finial/pull I will glue on. The Jacob's chuck helps center the dowel when gluing. You can also see the acorn nut bearing in the photo of the interior. This gives a better spin.

I had no idea your spin tops are that large!
 
Thanks - I’ll check dates from now on. I am new to AAW forum as well as to woodturning. Got message that I wouldn’t be completely “legal” until I logged 10 posts - just trying to get up to speed :-)
In that case, welcome and welcome! It’s a deep rabbit hole, this woodturning thing. Have fun :)
 
Got my new Lyle Jamieson hollowing rig mounted today. Tried it on a piece of ash. This thing is rock solid and such a pleasure to work with. Going to take some practice. Ended up about 1/4 “ thick. Not sure what I’m doing with it from here. Maybe let it dry some se what the cracks do. Maybe fill with some colored epoxy then iron acetate the outside, put some life into the ash. Open to suggestions!
 

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My latest experiment was not particularly successful, but provided some answers to whether applying Danish Oil as a hardener to spalting prior to finish turning is a good answer to the question of how to treat severe spalting...

This Maple burl bowl is heavily spalted and excessively soft in places. After seasoning the roughed bowl, it was brought to round. At this point, I applied a heavy coating of DO, with the hopes that the spalting would become hard enough to turn......(providing sharp tools presented well is a part of the equation). After waiting a few days for the DO to cure, I then attempted the 2nd finish turn. What I found was the DO does indeed harden to a turnable degree......ON THE SURFACE. Below the surface, the DO becomes gummy and smears on the surface as well as severely clogging the sandpaper. I wasted a lot off sandpaper dealing with this, but I eventually did acquire a decent sanded surface.....ready for final finishing.

I'm not sure the drawbacks are worth the effort to attempt hardening the spalted wood with DO.....but, it certainly is doable :)

=o=

View attachment 81218 View attachment 81219

That's a beautiful bowl and the wood is truly amazing.
 
Finished turning and sanding the pedestal for the cherry spin top body in my previous post. The wood is Imbuia, also known as Brazilian Walnut. This is my first time working with it. Slightly softer than Black Walnut, and similarly colored (though with a sort of yellowish tint). Pretty interesting grain, and a very fragrant scent. Turns and sands well. I sanded this to 600, and then went over with a grey scotchbrite pad and some brown paper. Will either lacquer or finish with paste wax. Undecided. Next step is to turn a small ebony spin platform that will insert into the top of the Imbuia pedestal via a 3/16” tenon. Following that, I’ll turn the stem/finial, and then the base. Carving and painting (of the Cherry spin body) afterward.


IMG_3431.jpeg
 
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