Post by: skeaterbait on March 04, 2019, 09:07:12 AM
Please tell me your thoughts?! :coffee:
Post by: buddyb on March 04, 2019, 09:12:03 AM
Post by: Roy from Pa on March 04, 2019, 09:22:06 AM
Ya can't be in that big of hurry.
Post by: skeaterbait on March 04, 2019, 09:27:31 AM
Post by: Crooked Stic on March 04, 2019, 09:30:39 AM
EA-40® has been used for many years for laminating fine woods. It is
preferred by bow makers around the world and offers longevity, flexibility
and memory required for making award winning performance bows.
Suggested laminating procedure;
1. Plane or lightly sand all surfaces to be laminated with 120 grit sand paper
2. Blow off dust with compressed air and wipe all surfaces clean using
acetone (Warning – acetone is flammable. Follow acetone manufacturer
procedures for handling). Let acetone evaporate for 10 minutes.
3. Mix and apply EA-40® as directed between layers of laminate to sanded
surfaces using a brush.
4. Carefully clamp laminated pieces together applying even pressure.
5. Place in oven and use the following step-cure schedule:
Temperature Duration
120°F / 48°C 2 hours
150°F / 65°C 2 hours
185°F / 85°C 2 hours
Important; Let cool for at least 6 hours to room temperature before
releasing clamps or handling.
Post by: Flem on March 04, 2019, 09:34:42 AM
EA-40 and most other 24hr room temp cure epoxies will cure in 1hr at 160 and be hard at 70. Thats if you were to take and mix some up in a shallow container, remove from heat and cool down right after cooking it.
Post by: kennym on March 04, 2019, 09:43:15 AM
WOOD LAMINATING / BOWMAKING
EA-40® has been used for many years for laminating fine woods. It is
preferred by bow makers around the world and offers longevity, flexibility
and memory required for making award winning performance bows.
Suggested laminating procedure;
1. Plane or lightly sand all surfaces to be laminated with 120 grit sand paper
2. Blow off dust with compressed air and wipe all surfaces clean using
acetone (Warning – acetone is flammable. Follow acetone manufacturer
procedures for handling). Let acetone evaporate for 10 minutes.
3. Mix and apply EA-40® as directed between layers of laminate to sanded
surfaces using a brush.
4. Carefully clamp laminated pieces together applying even pressure.
5. Place in oven and use the following step-cure schedule:
Temperature Duration
120°F / 48°C 2 hours
150°F / 65°C 2 hours
185°F / 85°C 2 hours
Important; Let cool for at least 6 hours to room temperature before
releasing clamps or handling.
This looks to be right off Smoothons tech sheet. Go with it, if a bow will come apart in the sun, it may slide if you take it right out of the form ….
So cool down there bro.
Post by: Bvas on March 04, 2019, 09:47:34 AM
I have two bows off the same form. One was built 58” and one 60”. When unstrung and sitting one behind the other on pegs, one definitely has more springback. And I can remember one was removed from the form while still slightly warm, but don’t remember which one. I must say, that the bows have different stack thickness. So this may be a contributing factor as well.
From now on, I will allow bows to cool completely before removing. Not only does it make sense as far as making sure the epoxy is set, but also makes sense for the wood lams. You wouldn’t heat bend an all wood bow and release it without allowing it to cool and take a set.
Post by: Pat B on March 04, 2019, 09:53:08 AM
Post by: monterey on March 04, 2019, 09:54:55 AM
Post by: Roy from Pa on March 04, 2019, 10:46:28 AM
Post by: Holm-Made on March 04, 2019, 10:58:03 AM
If you have it in the oven for 5-6 hours and let it cool to room temperature, AND the squeeze out is hard then the bow can be pulled out of the form. An additional 6 hours won’t hurt a thing but not necessary.
Post by: Roy from Pa on March 04, 2019, 11:05:04 AM
:laughing: :bigsmyl: :laughing: :wavey:
Post by: skeaterbait on March 04, 2019, 11:05:58 AM
Skeeterboy, looks like ya took your hat out of the form too soon cause one of yer horns is crooked:)
:laughing: :bigsmyl: :laughing: :wavey:
:biglaugh: Too much spring back
Post by: Roy from Pa on March 04, 2019, 11:09:20 AM
It's prolly causing head shock and trauma as ya move around.
Send it to me and I'll make horn tip overlays out of em horns....
Post by: Flem on March 04, 2019, 11:19:33 AM
[ You are not allowed to view attachments ]
Post by: skeaterbait on March 04, 2019, 11:20:39 AM
Hey skeater, I'll trade ya...
Post by: Mike L. on March 04, 2019, 12:30:44 PM
Post by: Crooked Stic on March 04, 2019, 01:05:27 PM
Post by: Garman on March 04, 2019, 01:26:32 PM
Post by: Mike L. on March 04, 2019, 03:36:13 PM
Mike
Post by: skeaterbait on March 04, 2019, 03:46:07 PM
Post by: buddyb on March 04, 2019, 03:57:32 PM
Post by: goobersan on March 04, 2019, 05:34:24 PM
According to Big Jim is helps to minimize the amount of gas released from certain woods therefore minimizing bubbles. A trick that would have been handy a month ago.
Aw geez, I can see where this is going :laughing:
Let it cool a few hours Skeater. No rush. If you're in a hurry to make fancy little wood pieces make a trilam. I hear sum folks are good at makin lightning strike
FYI- 176 for 6 hours. Rest overnight
Post by: Forwardhandle on March 04, 2019, 06:04:25 PM
Post by: Shredd on March 04, 2019, 10:52:29 PM
Post by: goobersan on March 05, 2019, 05:37:29 AM
Post by: Roy from Pa on March 05, 2019, 05:48:10 AM
Those gwass bows seem too high tech for me.
Post by: Crooked Stic on March 05, 2019, 07:59:16 AM
Post by: goobersan on March 05, 2019, 11:50:11 AM
Post by: Mike L. on March 05, 2019, 12:36:42 PM