Question for any Engineers or Materials Scientists out there

Flem · January 19, 2021, 08:42:17 PM

Damn Thats so cool. Makes me want to go bowling.
What is the belly lam, Charles?

Stagmitis · January 19, 2021, 08:56:56 PM

Pretty sure its formica.

williwaw · January 20, 2021, 01:06:39 AM

1971 Cravotta Brothers Black Hawk Catalog

http://nebula.wsimg.com/068e3a4a4372b21d6830b74cb42154a7?AccessKeyId=A203C91555201A4407B4&disposition=0&alloworigin=1

Roy from Pa · January 20, 2021, 06:14:24 AM

Black Hawk was my first recurve.

That brings back memories, there shop was about 10 miles from me.

Flem · January 20, 2021, 08:39:26 AM

"Whatcha think Shreddy? You can see the dark area on the belly lam compared to the back glass....."

I was wondering what the dark area material is?

Stagmitis · January 20, 2021, 08:47:52 AM

Flem, Its the brown craft paper underneath the decorative one on the face.

Stagmitis · January 20, 2021, 08:51:29 AM

Its a two lam maple core. I remember how excited I was when my mom bought this for me at Zayres department store

Mad Max · January 20, 2021, 09:11:32 AM

Cool Info. guy's

Flem · January 20, 2021, 09:17:38 AM

Thats some thick paper!

Mad Max · January 20, 2021, 09:33:03 AM

Quote from: Stagmitis on January 20, 2021, 08:47:52 AM
Flem, Its the brown craft paper underneath the decorative one on the face.

what is the craft paper for?

Stagmitis · January 20, 2021, 09:54:02 AM

Hey max Formica is made with layers of craft paper ( same as brown paper bag material) infused with resin. The last layer is decorative.

Flem I know it looks thick but I think its the angle of the handle. Probably .50 or less. I can see the engineered paper layers if I look close. Darn thing even has a maple power lam extending about 5" past the fades Lol.

Mad Max · January 20, 2021, 09:57:31 AM

I like the unbraced profile too

Flem · January 20, 2021, 10:06:48 AM

They put glass under the Formica. Interesting. The Formica must be mostly cosmetic.
Now who would do something crazy like that. Like to see the numbers on that stuff. Wonder if the cognoscenti would approve

Mad Max · January 20, 2021, 10:10:39 AM

Formica is on the belly

Mad Max · January 20, 2021, 10:19:03 AM

Here is a different one.
They are not saying back and belly.
They are saying back and facing.

Flem · January 20, 2021, 10:41:24 AM

The Formica is only on the belly side Charles?

Stagmitis · January 20, 2021, 10:54:13 AM

Formica only on the belly. Back has linear white glass....

Flem · January 20, 2021, 11:18:53 AM

I wonder how craft paper and resin compares to epoxy and bubbles?

williwaw · January 20, 2021, 03:32:23 PM

you will have to find that out by trying, I suppose. It would be interesting to compare the density of formica to glass.

Flem, I read some where you have noticed density of laminates (glass/resin ratios) make a difference. Can you share more of your observations? Is it just the belly lams that it makes a difference on?

Roy from Pa · January 20, 2021, 03:45:56 PM

cognoscenti

Flem, stop using those words I gotta look up.

LOL