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absrec
 Post subject: Re: Kerfing - why?
PostPosted: Tue Sep 17, 2013 1:26 pm 
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First name: Aaron
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Bryan Bear wrote:
My way to laminated solid linings is similar to Rodger's. The difference being I never bothered to make any kerfed linings. I got as far as thinking about how I would do all those cuts, it occurred to me that it would be less work to just make and laminate thinner strips. In practice, it take longer to glue them in than it would kerfed linings. I guess it is pretty much a wash. Batching kerfed linings may end up being slightly faster in the long run but it would also be more tedious (IMO) so there is no motivation to switch.

I hear ya. It doesn't really take me that long to do the cuts. I made a sled for the table saw that holds the lining in place with a "tab" that goes into the last notch that I cut. So you do a cut, advance it to the tab, make the next cut and so on. Like box or dovetail joints. I could probably do the thousand cuts or whatever in an hour or so.

The idea of the linings making my sides more rigid intrigues me though. Do rigid sides do anything for tone?

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Rodger Knox
 Post subject: Re: Kerfing - why?
PostPosted: Tue Sep 17, 2013 1:45 pm 
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Cutting the kerfs and glueing them in is probably faster than cutting the laminated linings and glueing them in.
Cutting the laminated linings is quicker and less tedious, but then you've got five to glue in instead of one, so the the glueing takes much longer.
The real benifit is the stiffer sides, and a little extra weight in the linings helps the impedence mismatch between the top and sides.

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absrec
 Post subject: Re: Kerfing - why?
PostPosted: Wed Sep 18, 2013 5:25 am 
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Ok... This rocks. :)

I got a heating blanket and am using it to reheat and "lock in" my side shapes that I bent. Best $80 I ever spent.


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Barry Daniels
 Post subject: Re: Kerfing - why?
PostPosted: Wed Sep 18, 2013 8:47 am 
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You should put the heating blanket between the metal slat and the wood. Yours has no protection and may be damaged by the clamping blocks.
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absrec
 Post subject: Re: Kerfing - why?
PostPosted: Wed Sep 18, 2013 9:59 am 
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Barry Daniels wrote:
You should put the heating blanket between the metal slat and the wood. Yours has no protection and may be damaged by the clamping blocks.

Ok. Good tip. I remembered seeing on the LMI video that Robert O'Brien put the heating blanket on the very top of the sandwich. I think? I was also thinking that having a slat between the blanket and the wood would help to keep it from scorching. That thing heats up quick!

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