Can anyone give me an idea how to make a quick and dirty taper jig for my drum sander? Tapering my lams by hand is getting old.
Thanks.
Dave.
Nock taper or shaft taper?
Sorry, I wasn't clear. It's for tapering core lams.
I usually taper from 1/4" to 3/16" .
Dave.
Quote from: wood carver 2 on February 27, 2021, 04:47:47 PM
Sorry, I wasn't clear. It's for tapering core lams.
I usually taper from 1/4" to 3/16" .
Dave.
I made one on my table saw using a sled but it was far from perfect. I refined it by measuring every couple of inches with a caliper and using a belt sander to smooth out the high spots. Servicable, but still not great.
Mark
Order a couple tapered lams from Kenny, then use as a pattern and run them on a 3 inch backing board
https://youtu.be/KrndKbkip_0
Being as shipping would be a killer on them to Canada, I would take 2 perfectly straight pcs of 3/4 lumber and do quarter or eighth points on it and use tape to build up the points.
Mark, I was thinking of doing something like you suggested, but I wasn't sure if it would be accurate. I have a jig for sawing tapers on the table saw, but again, accuracy isn't perfect.
Roy, I thought of that too. I know that would be the best way. I was hoping for a quick solution. 🤔
I tried using two pieces of melamine left over from a cabinet with a thin spacer between them, but they're too flexible.
Dave.
Pretty sure it was Bue who had this idea. As an example, take a 4" X 40" piece of 3/4" MDF and start layering 4" pieces of blue painters tape across it and step up the number of layers as you work your way down the plank. You will have to measure your tape thickness and add layers as necessary to get your taper rate. Then throw your sled blank on top and grind away.
Quote from: kennym on February 27, 2021, 05:34:22 PM
Being as shipping would be a killer on them to Canada, I would take 2 perfectly straight pcs of 3/4 lumber and do quarter or eighth points on it and use tape to build up the points.
That would work. Thanks Kenny!!!
Can you give me a ballpark estimate for shipping to Cambridge, Ontario?
http://www.tradgang.com/tgsmf/index.php?topic=146922.msg2557416#msg2557416
Found this old post
Quote from: Flem on February 27, 2021, 05:42:09 PM
Pretty sure it was Bue who had this idea. As an example, take a 4" X 40" piece of 3/4" MDF and start layering 4" pieces of blue painters tape across it and step up the number of layers as you work your way down the plank. You will have to measure your tape thickness and add layers as necessary to get your taper rate. Then throw your sled blank on top and grind away.
Kenny beat you to it by a minute or so. But thanks.
Thank you also, Bue.
Dave.
Quote from: wood carver 2 on February 27, 2021, 04:47:47 PM
Sorry, I wasn't clear. It's for tapering core lams.
I usually taper from 1/4" to 3/16" .
Dave.
Hey, I'm sorry. I did a half a$$ed read of your question. :banghead:
No problem. I'm guilty of the same thing quite often. 🙂
Dave.
I made this full lenght taper board with the cross laying of tape pieces. I first jointed and planed a dry hardwood board to 1/2 inch thickness. Left a 8 inch section in the middle parallel and then started to lay 1 inch wide yellow tape across. Took about an hour. Just by chance it came out very close to a .003 taper. I have a small stop at one end and use it as it is. I do not use it for thin lams to glass bows, but for all wood lam bows, also center and belly lams for bamboo backed trilams. I use it both in a planer and lam grinder. I guess if I wanted a permanent sled without the tape I could have started to lay the tape opposite from each end and the put a parrallel on top of that and run it through the planer. I' ll take some pics later or tomorrow.
Picture
That's perfect. I'm building tri-lams and I like a full length core lam. I'll make one tomorrow.
Thank you Bue!
Dave.
If you guys could see the way I have been doing tapers, you would hit me with a bat.
Dave.
Nah, most of us have been there, done that.
Heck Dave I used to do them on my edge sander.
Looked like Ray Charles did em:)
That's what I've been doing. It works but it's slow and a lot of effort.
I'm not a kid anymore and I'm beat up from working. 🤕🙂
Dave.