Author Topic: laminate bow form; hose or clamps  (Read 1101 times)

Offline MoeM

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Re: laminate bow form; hose or clamps
« Reply #20 on: November 25, 2013, 08:35:00 AM »
Damn this **** is crazy, I did a pre glue dry run with the hose tied down with a rope using gundog`s way and at only 2bar one of the 1/2 dowels just broke and flew around in my shop... I think I`ll turn to the 2-piece form with steel beam holders!

How much pressure do you guys use? I`ve heard about 60 PSI right?

Offline Robertfishes

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Re: laminate bow form; hose or clamps
« Reply #21 on: November 25, 2013, 08:56:00 AM »
60 to 65psi is what I use.. I also use a bike pump, I air hose up slowly..I check lams and riser for alignment every few pumps. I can usually get 55-60psi with my bike pump,then I use my air compressor for the last few pounds of air pressure. I keep a spare bike pump and fire hose set up in my shop just in case..also get a pack of extra valves for the hose, it will also have the little valve tool in it, only cost me a couple of dollars..almost cost me more when I didn't have them in the shop..

Offline onemississipp

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Re: laminate bow form; hose or clamps
« Reply #22 on: November 25, 2013, 11:23:00 AM »
Moem,
  Could be gundog is using bolts and you were using wood dowels.

You could use wood dowels but need a wood higher in specific gravity, more than 60 psi.
Dustin
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Offline onemississipp

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Re: laminate bow form; hose or clamps
« Reply #23 on: November 25, 2013, 11:24:00 AM »
60 psi here also...

Going to try an inter tube form in the next week or so just to see how well it works.
Dustin
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Offline bjansen

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Re: laminate bow form; hose or clamps
« Reply #24 on: November 25, 2013, 09:41:00 PM »
Once I used an air hose form, I never messed with rubber bands or clamps again.  

30 psi, let it ooze...then 45, another minute...50, then 60. That process works well for me.

Offline Gundog68

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Re: laminate bow form; hose or clamps
« Reply #25 on: November 26, 2013, 01:30:00 AM »
Quote
Originally posted by onemississipp:
Moem,
  Could be gundog is using bolts and you were using wood dowels.

You could use wood dowels but need a wood higher in specific gravity, more than 60 psi.
Yes, i am using bolts(12mm). This method (with the rope and hose) is invented from nikodemus (free-archers.de).

Offline MoeM

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Re: laminate bow form; hose or clamps
« Reply #26 on: November 26, 2013, 05:11:00 AM »
Ah steel bolts seem to be the answer, I have some leftover pipes stainless steel I think those gotta work....
What rope do you use? Is there a specific "break force" (Bruchlast) you would recommend?
Do you use some lams between rope and hose or yust tie it really close?

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