Author Topic: Gonna try a build along for my first glass recurve  (Read 1690 times)

Offline Pago

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Re: Gonna try a build along for my first glass recurve
« Reply #20 on: June 09, 2016, 06:03:00 PM »
I wonder where you got your glass from. My first glass I bought from 3 rivers didn't splinter at all. The second I got from binghams it splintered very easily.

Figure 8 was exactly what I was trying to imply Monteray hit the nail on the head.

If you are scarf jointing some of your lams be careful of putting them through dry runs I have had scarf joints pop when bent without smooth-on on them.
The best made plan won't get it made the way you planned.

Offline Meleon

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Re: Gonna try a build along for my first glass recurve
« Reply #21 on: June 09, 2016, 08:46:00 PM »
I got my glass from wrights archery. Doubt there's anything wrong with I just hyper sensitive. I cry over doing doing pink insulation lol.

My scarf joint was still drying when I did the dry run so it was omitted

Offline Meleon

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Re: Gonna try a build along for my first glass recurve
« Reply #22 on: June 24, 2016, 05:52:00 PM »
[/url] [/IMG]
I got it all glued up and in the oven (my hay loft)
I did notice as I was clamping it up that my scarf joint failed and opened up about 1/4 inch.  :(
I'm hoping that an overlay will hide my sins and that a failed joint mid riser won't effect performance.

Offline monterey

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Re: Gonna try a build along for my first glass recurve
« Reply #23 on: June 24, 2016, 06:45:00 PM »
What did you join the scarf with?

Kinda late for this suggestion, but I use a block at the end of the lay up on a rubber band form.  The blocks prevent the lams from slipping.  All the lams are sized in advance during a dry run.

On my ASLs the lams are just butted together and hidden by the handle wrap    :o
Monterey

"I didn't say all that stuff". - Confucius........and Yogi Berra

Offline Meleon

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Re: Gonna try a build along for my first glass recurve
« Reply #24 on: June 24, 2016, 07:36:00 PM »
I used titebond 3. I kinda expected the problem. I had a hiccup in the glue up. I'll likely us smooth on on the next one.
Nope not too late. I've got enough glass for 3 more.

Thanks for the tip.

Offline mikkekeswick

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Re: Gonna try a build along for my first glass recurve
« Reply #25 on: June 25, 2016, 03:34:00 AM »
For gluing scarfs etc just use a quality superglue.

Offline Meleon

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Re: Gonna try a build along for my first glass recurve
« Reply #26 on: June 26, 2016, 07:13:00 PM »
[/url] [/IMG]
Here it is off the form, boogers and all.
  [/url] [/IMG]  [/url] [/IMG]  
The failed scarf joint  :(
But apart form that the glue lines all seem decent
  [IMG [/IMG]  
    [/url] [/IMG]

Offline Pago

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Re: Gonna try a build along for my first glass recurve
« Reply #27 on: June 27, 2016, 02:37:00 AM »
Glue lines look good from what I can see. Slap an overlay over that joint or you could even and an artistic dip or finger well if it's in the right position.  As others have said use a good superglue on those joints. Looks like your on your way to a successful first bow congrats looks great!
The best made plan won't get it made the way you planned.

Offline Meleon

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Re: Gonna try a build along for my first glass recurve
« Reply #28 on: June 29, 2016, 12:44:00 PM »
FAIL
as I was stringing the bow for the first time, one of the limbs delaminated. At least it happened attached to the bow stringer rather than up near my beautiful face lol.
  [/url] [/IMG]  
  [/url] [/IMG]  
Is there any hints in those pictures as to what may have caused it? Glue starvation? Improper mix (EA-40)? Iams where finished with 36 grit, cleaned with acetone. I may not have waited the 15mins after mixing to apply the glue.

I roughed shaped the riser afterward so I could get good and depressed looking at it.  [/url] [/IMG]  
  [/url] [/IMG]  

Until the next one (soon) thanks everyone for all your help.
Jamie

Offline Pago

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Re: Gonna try a build along for my first glass recurve
« Reply #29 on: June 29, 2016, 01:58:00 PM »
I have looked at all your pictures and I'm wondering if you need to take a close look at your clamping pressure.  Most who are using firehose pressure up to 60-70psi which is a lot of pressure.  I did some experimentation to arrive at the thought that I needed to basically take all the stretch out of the rubber to achieve approximately that level of clamping power.  I don't put the rubber on as tight as I physically can but it's close and my hands cramp afterward. I also make sure and use a little extra smooth on and work it in to the laminations with a rubber roller.  What a shame I thought you nailed and were on your way to a great first bow.
The best made plan won't get it made the way you planned.

Offline Mad Max

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Re: Gonna try a build along for my first glass recurve
« Reply #30 on: June 29, 2016, 03:27:00 PM »
Looks like you did not sand the edges and glass corners from riser to tips?
all edges need to be sanded smooth before bending with a string.

or what they said

Good luck on the next one.
You can do it        :)    :thumbsup:    

I always use black glass and cheep wood on the first one off a form.
I would rather fail at something above my means, than to succeed at something  beneath my means  
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Offline Meleon

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Re: Gonna try a build along for my first glass recurve
« Reply #31 on: June 29, 2016, 08:36:00 PM »
Pago, I kinda hope your not right about a the clamping pressure cause I don't think I can get them any tighter. I was scared the dowels where gonna break stretching those tubes. I used a lot of glue. Spread with a 2" putty knife. There was a lot of squeeze out when I put the perpendicular bands on and there was a whole lot more after putting the diangled bands
on.

Mark, I had the limbs shaped but only with 36 grit on the belt sander. I should have gone threw some finer grits before stringing it?
My wood is free and there's only $4 dollars difference in a bows worth of material from my supplier here in Canada. It's still a hard pill to swallow. At least I've enjoyed the process so far.

Offline Mad Max

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Re: Gonna try a build along for my first glass recurve
« Reply #32 on: June 29, 2016, 09:07:00 PM »
I broke one from not sanding the corners of the glass
I would rather fail at something above my means, than to succeed at something  beneath my means  
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Offline Pago

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Re: Gonna try a build along for my first glass recurve
« Reply #33 on: June 30, 2016, 01:02:00 AM »
It is hard to offer a diagnosis in pictures and there are many here more experienced than I.  I don't think anyone has mentioned moisture content that can be a problem.  I hope some of this helps.
The best made plan won't get it made the way you planned.

Offline mikkekeswick

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Re: Gonna try a build along for my first glass recurve
« Reply #34 on: June 30, 2016, 02:23:00 AM »
Don't wipe your wood lams with acetone! A stiff brush is all you need.
Sorry for the delamination.

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