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Main Boards => The Bowyer's Bench => Topic started by: Mike L. on July 15, 2020, 05:54:29 PM

Title: Accidental butt splice technique.
Post by: Mike L. on July 15, 2020, 05:54:29 PM

I just accidentally discovered a new way to angle the butt end of lams for splicing.  I was running some lams through the drum sander.  I had just switched sleds and hadn’t adjusted the height.  The drum had just grabbed the lams when I got the conveyer shut off.  When I pulled the lams out, I realized they were perfectly sanded for splicing.  I’ve had trouble doing this with a disc sander, so this was a happy surprise.  Did the same thing for the rest of the lams; so far so good. 

Title: Re: Accidental butt splice technique.
Post by: monterey on July 15, 2020, 07:26:23 PM

Will they join up with the concave shape?

Title: Re: Accidental butt splice technique.
Post by: Pat B on July 15, 2020, 07:38:11 PM

...and it's a scarf splice and not a butt splice.

Title: Re: Accidental butt splice technique.
Post by: Mike L. on July 15, 2020, 07:55:17 PM

It seemed to work well with the thinner pieces, but I think the concave shape is the reason I’m having a hard time with the .050 lam.  Thank you for correcting me on the type of splice.  I thought the scarf was a type of butt joint. 

Title: Re: Accidental butt splice technique.
Post by: Shredd on July 15, 2020, 09:15:08 PM

The angle seems a bit steep and the concave surface is not good...  I believe in boat building I think the standard is 7 to 1 in a scarf joint...  So that would be about a 5/8" to 7/8" long joint for a lam...

   Nice try though...    :laughing:   You can't get anything past these guys...   :goldtooth:

Title: Re: Accidental butt splice technique.
Post by: Mike L. on July 15, 2020, 09:18:43 PM

When I got on and saw the question about the concave shape, it was after the second time I glued the .05 lam.  Depending on the thickness of the lam I’m
Lucky to get 3/8” that’s a straight surface sometimes.