Guido

So, I guess they are asking well over $200,000?

That’s the brand of Erwin Georg Volkmann.

Pondering this a bit I'm currently leaning to a thin CA glue, rather than a strong (and somewhat thick) hide glue. And I think I'll want to leave it at glue-only for the time being. Any major objections before I get the glue out of the fridge?

It's harder to see bow in hand than in the photo :-) The crack running with the grain extends about the distance between the two arrows.

Good idea, structurally. I’ve seen it a few times. But whenever I see a bow with a thread over a break/ lift I always assume the worst as you can’t see the extend of the damage anymore. I was considering possibly a pin; but maybe only if glue only fails. ”Concealing” is not an objective. I’d be quite happy for the break to remain visible for what it is, especially if the bow is to change hands in the future.

This stick has a break behind the head as indicated on the picture. I runs forward with the grain a couple of cm. Under hair tension the break flexes open ever so slightly. I'm thinking to glue with a strong hide glue in anticipation of further trouble down the road. My main concern would be to get sufficient glue into the crack. I'm wondering if a thin CA glue would be more successful initially (but more trouble down the road if it fails). Any opinions/ ideas?

Looks perfect. They didn’t have that when I was shopping around for mine a while ago.

It can be surprisingly ridiculous to get stuff shipped to OZ. I gave up when I was looking for latex (a while back).

Don’t remember where I got it. Random online. There are different width roles, my wrap is 50cm wide. Smallest amount available is a lifetime supply though. I like how thin it is given the strength.

You may want to undo this and set the neck to a proper angle. Projection looks awfully low. Curious what “clear violin glue” you may have used here?

I use a type of cling wrap. But not the common kitchen variety. It comes in thicker/stronger versions on larger/wider rolls and is commonly used for pallet wrapping. I find it just about perfect. And it’s cheap and readily available. I had trouble finding suitable latex where I am, too.

Is it quite large? And do you have a pic of the end pin area?

Gruenke notes "JUL.HEINR.ZIMMERMANN" branded bows to have been supplied by a wide range of vogtland workshops of the time and in a wide range of qualities. The brand on your bow looks different. Even if it relates to the above, there is not much to be learned from it. The fit looks ok to me. The adjuster has a lot of wear. Not sure.

Me, too. Sort of. I did not note handle diameter or slight variations in winding length, nor did I graph it. But w/o leather I average about 1g for tinsel, 1.5 for whalebone, 3.4g for 0.22 silver and 4.2g for 0.25 silver. The greatest variation is probably in tinsel of different types. Leathers average around 1g but I might add that I'm not a fan of thick or large leathers. A small French style leather (18-20mm) can be as little as 0.4-0.5g.

That is 100% the situation I am in. I tend to replace tinsel (and whalebone) with a lighter gauge silver (0.22) to reduce impact of the bow's balance.