Primitive Archer

Main Discussion Area => Bows => Topic started by: DC on April 02, 2020, 12:54:09 pm

Title: Fixing screw-ups
Post by: DC on April 02, 2020, 12:54:09 pm
I scorched the back. Not sure why or how but this is what I've got. The other limb is sorta the same. It won't sand out. I'm not asking how to avoid it, I'm asking how to fix it. I was thinking about staining the outer limb but when I tried on a test piece the scorched part stayed darker. Any clever ideas or do I just live with it?
Title: Re: Fixing screw-ups
Post by: PatM on April 02, 2020, 01:21:06 pm
The compromised tensile strength will be more of a potential issue.
Title: Re: Fixing screw-ups
Post by: Pat B on April 02, 2020, 01:21:54 pm
Rawhide backing might help.
 Looks like the heat wrapped around the limb. Maybe deflected by something.
Title: Re: Fixing screw-ups
Post by: DC on April 02, 2020, 01:56:21 pm
The compromised tensile strength will be more of a potential issue.

I've pulled it a bunch on the tree and as the man said as he passed the third floor,"so far so good." It does concern me though.

Rawhide backing might help.
 Looks like the heat wrapped around the limb. Maybe deflected by something.

My caul is a 2x4 and the limb is about 1" wide. I'm thinkin' that's a problem. I may slope off the edges of the caul.

I gurss fix it was the wrong term. How about hide it?
Title: Re: Fixing screw-ups
Post by: Ricardovanleeuwen on April 02, 2020, 03:02:14 pm
 Stain everything darker but not the spot
Title: Re: Fixing screw-ups
Post by: Deerhunter21 on April 02, 2020, 03:03:59 pm
Stain everything darker but not the spot


lol. if there is something wrong you definitely dont want to paint it over  :-T
Title: Re: Fixing screw-ups
Post by: Ricardovanleeuwen on April 02, 2020, 03:09:23 pm
Last post he asked to hide It not fix :OK
Title: Re: Fixing screw-ups
Post by: Pat B on April 02, 2020, 03:21:06 pm
There could be a loss of tensile strength in that area. That's why I suggested rawhide backing. You could dye it whatever color you wanted.
Title: Re: Fixing screw-ups
Post by: DC on April 02, 2020, 03:40:57 pm
If I had some rawhide :-\. Maybe just the corner of shame until I can get some rawhide.
 After the crud is over.
Stain everything darker but not the spot


That's what I've been trying to do. It's not easy to match colours, especially for me. The scorch isn't grey or brown. It actually looks, well my wife called it a lilac colour. A guy would say light purple :D
Title: Re: Fixing screw-ups
Post by: PatM on April 02, 2020, 04:08:34 pm
Sinew?  Or maybe silk.     
Title: Re: Fixing screw-ups
Post by: DC on April 02, 2020, 04:51:16 pm
How well would sinew work on Black Locust? I could soak the sinew off my hornbow. Hmmm.
Title: Re: Fixing screw-ups
Post by: PatM on April 02, 2020, 05:04:21 pm
What happened to your hornbow?

   Sinew would be fine on BL, especially if you're just using a thin insurance layer.
Title: Re: Fixing screw-ups
Post by: bradsmith2010 on April 02, 2020, 05:05:09 pm
sinew is good on black locust
Title: Re: Fixing screw-ups
Post by: DC on April 02, 2020, 05:48:57 pm
The hornbow exploded. I tested this bow today and it shot 181fps@10gpp. Maybe sinew. Funny thing though if I was to sinew it I would probably want to shorten it which would almost remove all the scorch :D
Title: Re: Fixing screw-ups
Post by: artcher1 on April 02, 2020, 06:11:31 pm
DC, have you ever used rosin floor covering for a backing? It's easy, quick and covers nicely. Looks a lot like a nice rawhide backing when painted or varnished.

Yeah, chamfer the edges of your form...……….Art
Title: Re: Fixing screw-ups
Post by: DC on April 02, 2020, 06:31:53 pm
DC, have you ever used rosin floor covering for a backing? It's easy, quick and covers nicely. Looks a lot like a nice rawhide backing when painted or varnished.

Yeah, chamfer the edges of your form...……….Art
I'd never even heard of it. I had to Google it. :D The back isn't quite flat, would it conform to it?
Title: Re: Fixing screw-ups
Post by: artcher1 on April 03, 2020, 04:10:54 am
I learned about using the rosin paper for a backing here on the PA forum 15-20 yrs ago. All I can remember was that it was easy to apply and looked nice. I used it to back several maple staves. I was using Tite-Bond II back then to glue on all types of backing...….Art