Author Topic: bow form material  (Read 417 times)

Offline bsv

  • Contributing Member
  • Trad Bowhunter
  • ***
  • Posts: 588
bow form material
« on: March 20, 2019, 11:37:41 AM »
is mdf okay for forms I have access to all thickness at work.. Thanks Burt
Black Widow saII 60in 57
Dave Johnson 66in 50@28
Tim Meigs 68in 63#@28
N.M. Whisper 68 in 45@28
N.M.shelton 66 in 51 @28
J.D.Berry Heritage 68 in 52 @30
BBI self made

Online Flem

  • Trad Bowhunter
  • **
  • Posts: 532
Re: bow form material
« Reply #1 on: March 20, 2019, 12:03:10 PM »
Mdf has real good compressive strength on its flat surface, not so much on the edge. I would guess if you used a stout piece of material on the assembled face, it would be OK. Hopefully somebody who uses a high pressure hose system will chime in.

Offline David Flanrey

  • Trad Bowhunter
  • **
  • Posts: 865
Re: bow form material
« Reply #2 on: March 20, 2019, 12:31:12 PM »
I use LVL and run it through a planer or drum sander to get the thickness I want.

Offline bsv

  • Contributing Member
  • Trad Bowhunter
  • ***
  • Posts: 588
Re: bow form material
« Reply #3 on: March 20, 2019, 12:46:53 PM »
My plan is the topless method I saw on here in a video,Steel plates on the sides with steel pins and mule tape with pressure hose..formica on the top of the form.we have a laser at work to make the plates. Burt
Black Widow saII 60in 57
Dave Johnson 66in 50@28
Tim Meigs 68in 63#@28
N.M. Whisper 68 in 45@28
N.M.shelton 66 in 51 @28
J.D.Berry Heritage 68 in 52 @30
BBI self made

Offline bsv

  • Contributing Member
  • Trad Bowhunter
  • ***
  • Posts: 588
Re: bow form material
« Reply #4 on: March 20, 2019, 12:52:07 PM »
when I think LVL I think I-beam shape,Can ya get LVL at home stores?
Black Widow saII 60in 57
Dave Johnson 66in 50@28
Tim Meigs 68in 63#@28
N.M. Whisper 68 in 45@28
N.M.shelton 66 in 51 @28
J.D.Berry Heritage 68 in 52 @30
BBI self made

Online JWheel

  • Trad Bowhunter
  • **
  • Posts: 48
Re: bow form material
« Reply #5 on: March 20, 2019, 02:20:10 PM »
I've used 3/4" birch plywood glued n screwed together to make 1.5" thick....I think you may have problems getting formica to glue to the MDF surface.

Online Crooked Stic

  • Trad Bowhunter
  • **
  • Posts: 2897
Re: bow form material
« Reply #6 on: March 20, 2019, 02:57:59 PM »
You are better of using LVL or 5 or 7 layer plywood. MDF not good with moisture. And I have seen pics of forms that broke under pressure.
High on Archery.

Offline bsv

  • Contributing Member
  • Trad Bowhunter
  • ***
  • Posts: 588
Re: bow form material
« Reply #7 on: March 20, 2019, 03:26:52 PM »
Thank-you I have found 2x11x8ft LVL for $47 bucks  :goldtooth: :goldtooth:
Black Widow saII 60in 57
Dave Johnson 66in 50@28
Tim Meigs 68in 63#@28
N.M. Whisper 68 in 45@28
N.M.shelton 66 in 51 @28
J.D.Berry Heritage 68 in 52 @30
BBI self made

Online monterey

  • Contributing Member
  • Trad Bowhunter
  • ***
  • Posts: 3755
Re: bow form material
« Reply #8 on: March 20, 2019, 03:40:55 PM »
Is the  LVL a true 2"?
Monterey

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

Online Crittergetter

  • SPONSOR
  • Trad Bowhunter
  • ****
  • Posts: 2248
Re: bow form material
« Reply #9 on: March 20, 2019, 09:12:22 PM »
I wouldn’t trust mdf.
I use lvl and no complaints. I run it through the wide belt and get it down to desired thickness for both recurve and lb forms.
www.primaltechbows.com
An elitist mentality creates discord, even among the elite!
"I went jackalope hunting but all I saw was does!"
Luck is when preparedness meets opportunity, I just need more opportunities!

Online skeaterbait

  • Contributing Member
  • Trad Bowhunter
  • ***
  • Posts: 1044
Re: bow form material
« Reply #10 on: March 21, 2019, 06:23:02 AM »
What is the difference between LVL and just gluing plywood together? Aside from with LVL the factory gets to worry about straightness
There is no shortcut for experience.

Offline bsv

  • Contributing Member
  • Trad Bowhunter
  • ***
  • Posts: 588
Re: bow form material
« Reply #11 on: March 21, 2019, 07:35:38 AM »
It is not a true 2 inch but I will bring it down to 1.5 with Kennym"s method on his build-along
Black Widow saII 60in 57
Dave Johnson 66in 50@28
Tim Meigs 68in 63#@28
N.M. Whisper 68 in 45@28
N.M.shelton 66 in 51 @28
J.D.Berry Heritage 68 in 52 @30
BBI self made

Online Forwardhandle

  • Trad Bowhunter
  • **
  • Posts: 1355
Re: bow form material
« Reply #12 on: March 21, 2019, 09:15:42 AM »
That LVL sounds interesting I been using deminsional maple for my topless forms 2 peaces plied together perfect 1 1/2 " and face the top with .040 glass I really like the topless form now I got all the bugs worked out !
If you fear failure, you will never try ! But never except it!!

Offline bsv

  • Contributing Member
  • Trad Bowhunter
  • ***
  • Posts: 588
Re: bow form material
« Reply #13 on: March 21, 2019, 10:01:11 AM »
this will be my first laminated bow but that style seems to fit me..
Black Widow saII 60in 57
Dave Johnson 66in 50@28
Tim Meigs 68in 63#@28
N.M. Whisper 68 in 45@28
N.M.shelton 66 in 51 @28
J.D.Berry Heritage 68 in 52 @30
BBI self made

Online jess stuart

  • Trad Bowhunter
  • **
  • Posts: 1490
Re: bow form material
« Reply #14 on: March 21, 2019, 11:02:51 AM »
I have several MDF forms for takedowns, made a bunch of limbs on them without issue.  I do reinforce the form with 3/8" plywood.  MDF mills very easy but does have some drawbacks, heavy, doesn't do well if wet, soft and can chip easily
 I would not use it for a full length form  too heavy.  I think the LVL is the way to go, especially for a one piece form.

Offline Stagmitis

  • Trad Bowhunter
  • **
  • Posts: 173
Re: bow form material
« Reply #15 on: March 23, 2019, 04:47:40 PM »
Every form I have ever made from LVL has twisted/warped whether using heat strips or hot box. String alignment became impossible and I tossed quite a few bows in the garbage before I figured it out. Btw, this twist is difficult to detect.  I only use cabinet grade 3/4 plywood and have had no issues since.
Stagmitis

Users currently browsing this topic:

0 Members and 1 Guest are viewing this topic.
 

Contact Us | Trad Gang.com © | User Agreement

Copyright 2003 thru 2019 ~ Trad Gang.com ©