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Bent laminations: maximum widths?

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Forum topic by ben posted 04-14-2008 04:31 AM 667 views 0 times favorited 3 replies Add to Favorites Watch
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ben

158 posts in 2624 days


04-14-2008 04:31 AM

Question from the noob:

Are there “sensible” maximum widths (not thicknesses) when doing bent laminations? All of the examples that I’ve seen were of widths < 3”, so I wondered if they become less reliable at greater widths, or if it’s mere coincidence. Obviously, building a form to 12” in width would be a hassle, and setting up the clamping is clearly trickier. Are there “results” implications like better/worse springback, etc.?

Gracias.

-b


3 replies so far

View John Ormsby's profile

John Ormsby

1281 posts in 2491 days


#1 posted 04-14-2008 05:07 AM

Ben, Have a look at my projects under kitchen, curved, etc and you will see 4 curves sitting on the form they were made on. They are 7 1/2” wide each. The form I made was about 40” long so they could all be made at once to save clamping time. Using vacuum bags, one can glue pretty much anything up. It is common to glue up complete curved stair stringers and large round columns with this type of clamping system. John

-- Oldworld, Fair Oaks, Ca

View GaryK's profile

GaryK

10262 posts in 2742 days


#2 posted 04-14-2008 05:29 AM

Vacuum bagging does really do away with any width limitations, except for the size of your bag and ambition..

-- Gary - Never pass up the opportunity to make a mistake look like you planned it that way - Tyler, TX

View John Fry's profile

John Fry

74 posts in 2454 days


#3 posted 04-15-2008 02:35 AM

ben asked Are there “results” implications like better/worse springback, etc.?

Not really Ben. Spring back variances are related to the wood used, thickness and number of the laminations and most importantly in my book, is the adhesive used.

The width of a bent lam is only limited by your inventiveness in clamping strategies and form building if you are using one or two part forms and not using vacuum, or the size of your vacuum equipment if you are.

-- John, Chisel and Bit Custom Crafted Furniture, www.chiselandbit.com

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