glueing laminates
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glueing laminates
G'day
I was wondering if any of you have used aroldite to glue on bamboo laminates i tried but found that it still peeled of when i tried to tiller the bow. Could you give me tips on fixing laminations to the bow as i also tried PVA and it also failed and some other type of wood glue which also failed.
Thanks
I was wondering if any of you have used aroldite to glue on bamboo laminates i tried but found that it still peeled of when i tried to tiller the bow. Could you give me tips on fixing laminations to the bow as i also tried PVA and it also failed and some other type of wood glue which also failed.
Thanks
Running Bear
Araldite and PVA are definitely not the shot when it comes to glueing bamboo. You need to look for Urac 185 or Smooth-On (2-part epoxy) these should be available if you are in the States. Here in Australia Techniglue or other epoxy glues are used. I - and most other boywer - have had no problems with bamboo delaminating.
Araldite and PVA are definitely not the shot when it comes to glueing bamboo. You need to look for Urac 185 or Smooth-On (2-part epoxy) these should be available if you are in the States. Here in Australia Techniglue or other epoxy glues are used. I - and most other boywer - have had no problems with bamboo delaminating.
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Gidday Running Bear,Ive had good results using a marine grade epoxy called EPIGLUE.Should be available from any good boating accessesory store.Other mates use Technaglue and swear by it ,cant help with were they get it.Common old Resoursinol has also been recomended to me,it is widely available in good hardware stores.Regards-Perry.
"To my deep morticication my father once said to me, 'You care for nothing but shooting, dogs and rat catching, and you will be a disgrace to yourself and all your family.' "
- Charles Darwin
- Charles Darwin
For Techniglue, get in touch with John Clark at Ausbow in Adelaide:
http://www.ausbow.com.au/
or ATL Composites in Queensland. ATL manufactures Techniglue and they can probably tell you if there is a supplier near you. There are several types of Techniglue. I think you will need CA 60 or HP R15. If you do not have a hot box, you should choose the one which cures at room temperature.
http://www.atlcomposites.com/products/e ... index.htm#
http://www.ausbow.com.au/
or ATL Composites in Queensland. ATL manufactures Techniglue and they can probably tell you if there is a supplier near you. There are several types of Techniglue. I think you will need CA 60 or HP R15. If you do not have a hot box, you should choose the one which cures at room temperature.
http://www.atlcomposites.com/products/e ... index.htm#
Norman
Draw, anchor, loose.
Draw, anchor, loose.
- Stickbow Hunter
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I agree you should use a good epoxy glue but it would seem that you may have something else causing you problems because the Araldite should have held as it has been used for bow making; it just doesn't hold up real well in hot climates.
A few things I can think of which can cause the problems you are experiencing:
1. Are you clamping your laminates to tightly which squeezes too much glue out and starves the joint of glue.
2. Have you sanded the lams with course sand paper so the surface is rough for better adhesion of the glue?
3. Are you sure you don't have something contaminating (oils, finishes dust etc) the lams which maybe causing the glues not to adhere properly?
Anyway just thought I would throw these thoughts in as well. I hope you get things sorted quickly.
Jeff
A few things I can think of which can cause the problems you are experiencing:
1. Are you clamping your laminates to tightly which squeezes too much glue out and starves the joint of glue.
2. Have you sanded the lams with course sand paper so the surface is rough for better adhesion of the glue?
3. Are you sure you don't have something contaminating (oils, finishes dust etc) the lams which maybe causing the glues not to adhere properly?
Anyway just thought I would throw these thoughts in as well. I hope you get things sorted quickly.
Jeff
Last edited by Stickbow Hunter on Tue Sep 12, 2006 8:23 pm, edited 1 time in total.
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Had a thought that will help you no end with both the glue up and performance of a bamboo laminate bow.Bamboo is very hydroscopic,its is very difficult to get its moisture content down around 8 to10%.It will be worth your effort to build yourself a hotbox.This is simply a cabinet large enough to hold your staves or backing strips heated by a couple of light globes.A couple of days should be enough to dry out a bamboo backing
"To my deep morticication my father once said to me, 'You care for nothing but shooting, dogs and rat catching, and you will be a disgrace to yourself and all your family.' "
- Charles Darwin
- Charles Darwin
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ive never really considered a hotbox but i will start looking for plans to see how simple they are to build as it does sound like something i may need.
As for the araldite it is working now and my bow is staying together so i am now a very happy owner of a 65-70pd bamboo backed spotted gum bow that shoots really well however i may need to develope some more strength before i can use it effeciently.
Thanks every one once again for your advice.
As for the araldite it is working now and my bow is staying together so i am now a very happy owner of a 65-70pd bamboo backed spotted gum bow that shoots really well however i may need to develope some more strength before i can use it effeciently.
Thanks every one once again for your advice.
- Stickbow Hunter
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- Posts: 78
- Joined: Fri Jul 28, 2006 4:56 pm
- Location: Melbourne