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PostPosted: Wed Jun 08, 2022 5:14 pm 
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Brazilian Rosewood
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Anybody try bending two at a time, stacked on top of each other in the order they’re to be laminated?


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PostPosted: Wed Jun 08, 2022 5:31 pm 
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Maybe not the answer to your question, but Micheal Greenfield bends and glues his laminated sides together at the same time

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The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.


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PostPosted: Wed Jun 08, 2022 6:29 pm 
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Brazilian Rosewood
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It’s sorta the answer…anyone else?


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PostPosted: Wed Jun 08, 2022 6:57 pm 
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Brazilian Rosewood
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Saw that part of the doc but he was bending the sides as singles…


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PostPosted: Thu Jun 09, 2022 5:47 pm 
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Brazilian Rosewood
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I have done double sides for probably 12 years and always bend both together. No issues. Makes laminating them easier because they fit perfectly.

I always profile first and am careful that everything is lined up perfectly.

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PostPosted: Thu Jun 09, 2022 5:50 pm 
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Brazilian Rosewood
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Thanks Terence,

Does that include cutaways?

What thickness are you bending your lams?


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PostPosted: Thu Jun 09, 2022 6:57 pm 
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I have only done it once. Does that qualify me as an expert? I bent the inside piece first, then left it in the bender and bent the outside piece.

I did wrap the inside piece after it was bent with wet paper and tin foil to keep it from getting too hot.

They fit together well so I glued on the bender.

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PostPosted: Thu Jun 09, 2022 8:33 pm 
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Brazilian Rosewood
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Location: Alexandria MN
meddlingfool wrote:
Thanks Terence,

Does that include cutaways?

What thickness are you bending your lams?


I have bent archtop cutaway sides together, maple and mahogany. No flat tops.

Thickness is around .060 outer and .040-.050 inner.

My setup uses two blankets. The sandwich is slat/blanket/slat/moist paper/both sides /paper/slat/ blanket.
The moistened sides are profiled and the waist carefully marked. They stick together pretty well when moist and are cut to the same length and profiled on the same template so they line up well.

Sandwich is clamped together with spring clamps and placed in the bender lining up the waist.

Bending is routine and no issues or broken sides so far (fingers crossed!)

Here are some photos that show the profiled sides (Mahogany outer Rosewood inner), assembling the sandwich, placing it in the bender and removal and placing on the laminating form.

ImageC18DD05D-F637-4DF3-963A-4C8508638218 by Terence Kennedy, on Flickr

Image1B04DD41-AB47-4885-AFB8-BE9356FFA677 by Terence Kennedy, on Flickr

ImageAB6EAFD3-78CA-4989-B07D-7C6D57D47D9E by Terence Kennedy, on Flickr

ImageC70042E3-801A-4E0E-813B-51A08BF3749E by Terence Kennedy, on Flickr


Image7FEC5B58-BEA0-4C42-AF22-E25130EA15F0 by Terence Kennedy, on Flickr

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PostPosted: Fri Jun 10, 2022 12:08 am 
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Brazilian Rosewood
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Thanks, that gives me something to chew on…


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PostPosted: Fri Jun 10, 2022 8:05 am 
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Brazilian Rosewood
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I bend my double sides separately because I only have a single heating blanket on one side.


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PostPosted: Fri Jun 10, 2022 8:44 am 
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Brazilian Rosewood
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FWIW - I bend lining three layers thick at the same time. Each is .065” and I bend with a blanket on top and bottom. The wood is 4” wide and as long as needed for the body shape.

I made a bending form that is reduced by .285 from the outside mold so the lining nests into the side really well.

Once I switched to two blankets the top piece held it’s shape a lot better.


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PostPosted: Fri Jun 10, 2022 10:03 am 
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bcombs510 wrote:
FWIW - I bend lining three layers thick at the same time. Each is .065” and I bend with a blanket on top and bottom. The wood is 4” wide and as long as needed for the body shape.

I made a bending form that is reduced by .285 from the outside mold so the lining nests into the side really well.

Once I switched to two blankets the top piece held it’s shape a lot better.


Sent from my iPhone using Tapatalk Pro

And what wood are you using Brad?

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The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.



These users thanked the author Colin North for the post: bcombs510 (Fri Jun 10, 2022 6:37 pm)
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PostPosted: Fri Jun 10, 2022 6:38 pm 
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Brazilian Rosewood
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First name: Brad
Last Name: Combs
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I’ve done both white oak and paulownia this way. Mostly paulownia since that’s what I use for ukes and that’s all I’ve been building for the last year. :D


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