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Will liquid hide glue adhere the celluloid (and other wood) to some varnish and superglue spots? Or does it need to be totally bare wood?
I have a little of this on the surface, varnish used to...

I had no idea that celluloid is that flammable.
What keeps it safe on our older vintage instruments? I have some.

The color and patina of the original is very appealing to me, I would like to...

I got self adhesive new material but aesthetically really doesn't work for me.
Plus its a tough pattern to match. So I might abandon that idea.
It might be nice to find a celluloid that doesn't...

Any opinions or advice please?

How should I reattach the original pickguard as shown in the picture?
This is the same Weymann that is getting a replacement stave in another post.

The top had a crack down the middle under the...

So I decided to reglue the "internal strap" that had loosened from the adjacent staves as a way to pull the bowl together.
I hope I didn't create a monster by doing this.
Some additional...

I plan to try this approach
How does wrapping the sandblock with tape differ from just taping the instrument?

Yes I have read the razor scraping article. Very informative.
But with this technique won't I mar the original finish? (trying to avoid that)
That was my intention with the tape (super thin yellow...

After I removed the stuck splint (hairdryer) the sides of the crack were fairly level.
So I decided to go without the clamp, not to bad. Will remember the magnet trick.
Pictures of the process...

The end is repaired using tape to clamp it down. Pics showing the progress.

But now I've discovered the two sides of the crack are not even
So I'm thinking I need to clamp across the two sides of...

I think I will get the soundboard crack fixed and string it up with new 9-32s
Play it for a bit and then consider next step for fingerboard.
Pulling frets and removing the fingerboard might be a...

So the Weymann Bowlback that I'm repairing a top crack on also has a crack in the fingerboard. Wide at the soundhole thining as it progresses toward nut. Should I attempt to repair it? Or just leave...

So I have dry fitted the spruce splints as show. They fit really good.

But the new challenge is how to properly clamp for gluing.

The main issue I have is at the end (by the tailpiece) the top...

Another dilemma....

I stopped humidifying the mandolin for a few days, allowing it to sit in the room with windows open (dry here in SoCal)
The opening is now slightly wider than when I cut the...

The carpentry is pretty much done. The strip will fit really well after I get a way to support it.

I have been thinking to stain and finish the strip before I glue in place. Is that what you...

So after humidifying in a bag with wet sponge for about a week, the crack got noticably closer.
Tight enough that the splint would not fit in.
I left the mandolin out for a few days and the crack...

Still trying to match the stain and finish - not very easy. Going to go to HD and see if I can get a couple of stains.
The original stave has alot of color tones, brown, red, even some yellow. Its...

The broken stave is out.
I taped the cut line and carefully followed it with exacto. Used a little water along the line.
The heel block was a little challenging with glue on the bottom of stave.
...

Here are a few pictures of the continuing journey.
Two staves (one for backup) made from double layer birdseye veneer glued dry and clamped between to thin plexi sheets to forming caul.
When...

Do I use heat? and or water to soften the glue?

The veneer is 1/42" which I think is pretty standard.
The original stave is about 2mm or .079"
A three veneer laminate would be .071" which should be close.

If I do, how best to remove the...

So I acquired this one many years ago with the intent to scavange parts and its case.
But it just sat in my closet. Since covid I have been resurrecting many projects and this is one of them,...

I should have re-read this again (haha) because I was struggling with how to split a tiny shaving.
Came up with a razor shave (as you suggested, see pics), even had an old soundhole spruce plug...

How do I properly repair this top crack?

Somehow I need to draw it together, but its fairly happy in its current position and doesn't want to come together. I tried using light pressure from a...