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 Post subject: kerfed linings
PostPosted: Tue Aug 28, 2018 8:39 am 
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Koa
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First name: Richard
Last Name: Hutchings
City: Warwick
State: RI
Zip/Postal Code: 02889
Country: United States
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Status: Amateur
I want to make these on my table saw using my stew-mac fret blade. trying to figure out how to hold the triangled strip of wood. I don't want to cut the waste away after because I think it might leave furry edges on each slot. I keep saying I want to everything by hand but I think this would be way time consuming and boring by hand but I definitely want to make them myself out of whatever wood I decide on.

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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 8:59 am 
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Location: Powell River BC Canada
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Use a sled. I did post some pics one time. Not sure how you might find them.


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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 9:05 am 
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Koa
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First name: Richard
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I was thinking something like this. I don't think I would need a sled but maybe.

Attachment:
lining jig.jpg


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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 10:37 am 
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Brazilian Rosewood
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Joined: Sun Mar 30, 2008 8:20 am
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Personally I would not use the fret slotting blade - keep it sharp for fret slotting.
To make kerfed linings I (and several others) use the 7 1/4 inch Freud diablo blades. They cut a reasonably thin kerf, and by using 3 of them with spacers in between and stacked on the arbor of the tablesaw, you can cut three kerfs with each pass over the blades.
I cut the kerfs while the stock is still rectangular and I can tape a dozen or more together, which multiplies 3 blades X 12 pieces = 36 kerfs cut per pass over the blades. I use a simple tablesaw jig to cut them triangular and the small triangular "off fall" actually get used for tentalones. Aside from the sawdust there is no waste.


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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 12:04 pm 
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Koa
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First name: Richard
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Status: Amateur
Cool, that's what I'll do as well, minus the extra 2 blades. Someday I'll try the 3 blades if I find myself turning a profit but right now, it's just a hobby and my first guitar. I need to watch where my money goes. I have a lot of things to buy :-)

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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 12:23 pm 
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Koa
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First name: Richard
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Status: Amateur
What length? Do you cut them full length?

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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 2:06 pm 
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First name: Don
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Another way you can go (this is what I do):

Why stick with triangular linings? I like rectangular linings that have been introduced to a 1/4" roundover bit. Do the rounding over while the strip is still part of a larger board. Then slice the strip off the larger board. Then put it through the jig for cutting the kerfs. I agree with using the thin kerf Diablo blades, by the way. That is a good size for the kerfs. The roundover goes on the one corner that is not glued to the top or the sides (obviously). It looks good, it is easier to glue (since the gluing face and the clamping face are parallel to each other), and it adds just a little mass to the sides, which is not a bad thing.


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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 3:15 pm 
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Koa
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First name: Willard
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It might be safer to use a carrier board with the shim glued to fence & carrier, and the pin set to index from the carrier board vertically near the fence to make re-positioning faster and more positive. A front and back fence will keep the two halves of the sled aligned and together, and some 1/4" plywood or aluminum runners speced for the table's miter gauge slots would avoid having to use the fence for the job.

Changing the orientation of the shim will work to keep the work in place against cutting pressure, with the rear fence providing a more positive stop for the work, and a scrap block or a cam arm maintaining downward pressure during the cut (no fingers!!!). With this setup, something like up to four at a time could be milled on a 2 inch wide carrier using tape to coordinate movement, but I think I would be more comfortable doing one lining at a time.

The drawing below describes a potential tablesaw sled-based jig which is similar to one we use in the shop for fabricating linings for repairs. As mentioned, when we make kerfed linings, we use a 7-1/4" diameter x 0.060" kerf 40 tooth Freud Diablo blade and use a 'dentil' width of 0.270" and a web thickness of 0.015" in spruce and a bit thinner in mahogany...wetted in warm water, this provides a minimum radius of 1" without relieving the tips of the dentils.

Attachment:
Kerfed Lining Jig.jpg


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These users thanked the author Woodie G for the post: TimAllen (Wed Aug 29, 2018 1:32 am)
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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 3:25 pm 
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Country: Canada
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This has been shown before, but doesn’t everybody have one of these?

https://m.youtube.com/watch?v=Hnfm-5j8TUA

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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 3:27 pm 
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Koa
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City: Escondido
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Bri wrote:
This has been shown before, but doesn’t everybody have one of these?

https://m.youtube.com/watch?v=Hnfm-5j8TUA

No, but I would straight up kill for one of those!


Sent from my iPhone using Tapatalk Pro


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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 4:14 pm 
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Joined: Tue Dec 17, 2013 10:52 pm
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First name: Don
Last Name: Parker
City: Charleston
State: West Virginia
Zip/Postal Code: 25314
Country: USA
Focus: Build
Status: Amateur
I feel like that video deserves this music:

https://www.youtube.com/watch?v=w3FCRr3t9WU


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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 4:19 pm 
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Koa
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First name: Willard
Last Name: Guthrie
City: Cumberland
State: Maryland 21502
Zip/Postal Code: 21502
Country: United State
Focus: Repair
Status: Semi-pro
What our OP does not have is one of those things that is attached to that jig...which is to say a band saw. As the boss will sometimes mention when I lament the lack of a particular tool or jig in the shop, "You go to war with the army you have." I usually counter that I do not wish to do that, but should he give me an army, I can employ them sanding.

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We have become a civilization that elevates idiots, prostitutes, and clowns. Am I still to defend it? Yes, for its principles. Yes, for what it was. Yes, for what it still may be.

-Mark Helprin, The Oceans and the Stars: A Sea Story, A War Story, A Love Story (A Novel)


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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 4:32 pm 
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Brazilian Rosewood
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I love that the video has a thumbs down vote. Who does that? :D

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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 5:05 pm 
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Koa
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Joined: Thu Jan 10, 2008 5:08 am
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Location: Raleigh, NC
First name: Steve
Last Name: Sollod
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I made a jig for cutting kerfs. Yes, it can be tedious, but it gets the job done. Otherwise, buy it...


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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 10:12 pm 
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Here’s mine..

https://m.youtube.com/watch?v=6zXhLX6M9FI


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 Post subject: Re: kerfed linings
PostPosted: Tue Aug 28, 2018 11:34 pm 
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Michaeldc wrote:


I would absolutely have to own one of those rigs to go to the trouble of making my own kerfed lining.

Woodie G - "Dentils"! I was wondering just the other day if there was a word for those. Seriously, I was writing notes about how I routed a piece of kerfed lining to let in a side brace and I didn't know what to call those. Thank you.

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