Hi Guys,
I just dry heat bent my belly osage lam for a tri.
Initially I wasn't going to but I changed my mind and decided to use a non tapered piece for the belly.
It's .25" thick.
How long do you have to wait for rehydration before glue up?
My workshop is about 20-30% humidity.
...on a side note..is there a recommended humidity to try to keep a wood shop?
Thanks
personally i am wiping the heated surface with cold watered piece of fabric until it cool enough takes 10 minutes...
normally, you need need to let it cool by itself at least 1-2 hours...
this is what i know and how i do...
best.
I guess you'd have to wait for it to dry..kinda the opposite of me..lol
I didn't wait long...for better or worse...
I waited about 7mins then blew it off with compressed air till room temp.
Took about 15mins total for each side ( including heating, clamping etc.)
I didn't bend em much.
I was trying to come close to how the tips "should" bend if they were tapered and sitting in the jig which has raised tips.
When I was testing with the flat lam, the lam just bent fairly abruptly at the start and stayed pretty flat through the incline.
I ended up flipping them up 1 1/8" over an 8" span.
Now when I place the lam in the jig it has a pretty nice gentle curve.
And the core likes to lay up easier with it.
John, You can glue the belly lam as soon as it cools a little. What you don't want to do is stress the lam until it has rehydrated and if you use a water based glue like TB glue will add moisture.
A 1/4" lam shouldn't take long to dry out or rehydrate anyway.
Like Pat said, I have glued a bow up as soon as the wood cooled off. But it's normally 48 hours till I cut it out and even longer till I start tillering. One day for the first glue up to dry, then another day for the riser glue up to dry.
Thanks guys.
Hoping to glue tonight.
...and hopefully get the riser on this weekend.