The Forestry Forum is sponsored in part by:

AVAILABLE


Forestry Forum
Sponsored by:


TimberKing Sawmills



Toll Free 1-800-582-0470

LogRite Tools



Norwood Industries Inc.


Sawmill & Woodlot Magazine



Your source for Portable Sawmills, Edgers, Resaws, Sharpeners, Setters, Bandsaw Blades and Sawmill Parts

EZ Boardwalk Sawmills. More Saw For Less Money!

STIHLDealers.com sponsored by Northeast STIHL


Woodland Sawmills

Peterson Swingmills

 KASCO SharpTech WoodMaxx Blades

Turbosawmill

Sawmill Exchange

BRUTE FORCE Authorized Dealer

Woodshax Outdoor Vending Solutions

FARMA


Council Tool

Baker Products

ECHO-Bearcat



Author Topic: Glue????  (Read 849 times)

0 Members and 1 Guest are viewing this topic.

Offline Jno wood

  • member
  • *
  • Posts: 15
  • I'm new!
    • Share Post
Glue????
« on: April 30, 2018, 10:32:25 AM »
I am a cabinet maker working on my first timber framed project. I made my fare share of pinned mortise and tenon joints over the years, but with the holding power of modern glue, the pins are effectively decoration.

So why isn't glue used in modern timber framing? would it not just provide additional strength to a joint? 

Offline Roger Nair

  • Full Member x2
  • ***
  • Posts: 217
  • Age: 69
  • Location: Bakerton WVa
  • Gender: Male
  • I'm new!
    • Share Post
Re: Glue????
« Reply #1 on: April 30, 2018, 11:30:32 AM »
Large timber dries and distorts greatly in a variety of manners depending on where it was sawn out of the log in a three dimensional fashion.  Surfaces not only change in width but surfaces curl, angles change, checks open and spread and adjacent timbers grain cross with the grain moving in different directions and amount.  Glue may have some elastic quality but the thin layer of glue will not cope with the far greater movement of the wood.
An optimist believes this is the best of all possible worlds, the pessimist fears that the optimist is correct.--James Branch Cabell

Offline canopy

  • Full Member x2
  • ***
  • Posts: 201
  • Location: Thailand
  • Gender: Male
    • Share Post
Re: Glue????
« Reply #2 on: April 30, 2018, 07:53:32 PM »
The other way to look at it what would be the benefits of using glue? A timber frame is perfectly fine without glue and glue would add many drawbacks. As a cabinet maker you would understand how difficult it would be to raise a frame without glue joints drying too quickly. Raising a frame can take a day or more and in that time things often need moved and torqued or in some cases a bit of rework. And pegs would still be needed to make tight joints. Glue would add cost, time, and add more difficulty in disassembling and repairs down the line.

Offline Jno wood

  • member
  • *
  • Posts: 15
  • I'm new!
    • Share Post
Re: Glue????
« Reply #3 on: April 30, 2018, 08:30:41 PM »
 :D

That makes allot of sense. I have scrambled around the shop more than a few times on a complicated glue up, I can't imagine pulling it off on a larger timber project.

Offline Ianab

  • Administrator
  • *****
  • Posts: 12771
  • Age: 56
  • Location: Stratford , New Zealand
  • Gender: Male
  • Marmite on toast is a real breakfast
    • Share Post
Re: Glue????
« Reply #4 on: May 01, 2018, 02:56:29 AM »
From woodworking you would know that large cross grain glue-ups are a bad idea. A couple of inches on a mortise joint in furniture is fine because the glue will flex enough to allow for that. But the joins in a timber frame might be mortises with 8" or more of cross grain. Now a big mortise joint, with a peg or two holding things secure, allows for some drying and seasonal movement. Without your stress of a cross grain glue-up. 

Only place I can see a use is laminated beams, which isn't really traditional timber framing. But it's commonly used in modern wooden building construction, even on quite large multi-story buildings. 

Technically there is no reason you couldn't adapt timber frame principles to use prefabricated laminated components, but you would still want to put them together with pegs or bolts. 
Weekend warrior, Peterson JP test pilot, Dolmar 7900 and Stihl MS310 saws and  the usual collection of power tools :)

Online Brad_bb

  • Senior Member x2
  • *****
  • Posts: 3156
  • Age: 46
  • Location: Joliet, IL
  • Gender: Male
    • Share Post
    • My timberframe blog
Re: Glue????
« Reply #5 on: May 01, 2018, 09:24:04 PM »
Also...timberframing is done with green wood.  You don't use glue on green wood because it is still shrinking and moving.  Pegs have worked well for 2000+ years...that's why the craft still uses them.  
Anything someone can design, I can sure figure out how to fix!
If I say it\\\\\\\'s going to take so long, multiply that by at least 3!


Share via delicious Share via digg Share via facebook Share via linkedin Share via pinterest Share via reddit Share via stumble Share via tumblr Share via twitter

xx
Can you use calking glue to glue logs together?

Started by Rod on Timber Framing/Log construction

2 Replies
1317 Views
Last post February 28, 2005, 10:45:59 AM
by Rod
xx
Glue

Started by Tom Sawyer on Sawmills and Milling

3 Replies
965 Views
Last post July 08, 2007, 11:30:21 PM
by LT40HDD51
xx
glue

Started by Dan_Shade on General Woodworking

29 Replies
2825 Views
Last post October 04, 2012, 09:41:13 AM
by Dodgy Loner
xx
Glue-ups

Started by D._Frederick on General Woodworking

17 Replies
3235 Views
Last post March 27, 2009, 09:40:54 AM
by Modat22
 


Powered by EzPortal