My first composite bow attempt. (Magyar style)

JakobKurt · Post by **JakobKurt** » Tue Jun 25, 2013 5:18 pm

I took the binding of the glued together core today to inspect and clean it up, and it looks ok to me!! hopefully it is glued together properly. I butted some yew pieces to the ends of my short horn strips.
As a first timer there are quite a few doubts. my main worry is if i had enough pressure on it with the tyre tube? As i was putting it together i got glue everywhere including on my hands and the inner tube which made it quite slippery when pulling it tight.....
Secondly i just cant see how the glue will bend that much? all the stuff that was on the outside that i broke of when untying it was really quite brittle... is that normal?

Anyway... here are a couple of picture of how its looking so far..

http://www.flickr.com/photos/photosares ... 642858807/

As i already said im not calling it a magyar bow anymore. I could probably call it a yuan bow...??

JakobKurt · Post by **JakobKurt** » Tue Jun 25, 2013 5:19 pm

Oh yeah, and is there any specific amount of time it should wait before laying the first sinew layer?

JakobKurt · Post by **JakobKurt** » Sun Jun 30, 2013 6:02 pm

Hello again,
At the moment I'm looking at starting to "pre-tiller". I have drawn some lines on the side of the limbs to show you what I think looks right. But I just thought I would write and see first if anyone thaught that its not so good or has advise before I attack it with sand paper and a scraper.

Here is the link again for the pictures:
http://www.flickr.com/photos/photosarestories/

Jakob

mikekeswick · Post by **mikekeswick** » Thu Jul 11, 2013 10:36 am

You should follow the advice already given earlier...buy Adams book it has the answer to all your previous questions and all the questions you still have to ask! Just go hungry for a few days to get the money together....Buying the book WILL save you money.

As for how long to wait after gluing the horns - 2 weeks should be sufficent. Inner tubes aren't the best method for horn gluing...rubber that is tight to begin with 'creeps' over time and the clamping force is reduced, heat also makes it weaker. As you have found out it also means that you can't keep the glue fillet topped up as the glue gels. Be watchful for horn delamination when it comes to bending it, if caught early it can be fixed.

JakobKurt · Post by **JakobKurt** » Sun Jul 14, 2013 9:35 pm

Yes I agree with the book. I should be able to order it at the end o this month...
As for the horn - core glue join from the outside it looks ok. It is a perfect seem all the way down the bow (to be) and the grooves which are about 1 1/2 - 2 mm deep are pretty perfectly joined together, and as I said the glue definitely did gel when putting it together. But of course, I am really trying to expect to happen what you wrote with the de-lam!!!
Just have wait and see I guess... I'm hoping!

It is now almost ready for the first layer of sinew now.
Shredding the sinew is taking me a really really long time!! I have already spent so many hours and have only just done four tendons..

mikekeswick · Post by **mikekeswick** » Tue Jul 16, 2013 3:54 pm

Yes fingers crossed! You'll learn something whatever happens which is the important thing in the end.
shredding sinew gets easier with time and practise....honestly!

JakobKurt · Post by **JakobKurt** » Tue Jul 16, 2013 6:19 pm

JakobKurt wrote: and as I said the glue definitely did * gel when putting it together.

* did NOT gel.