LumberJocks

Hide Glue for Beginners #6: Perfect Splined Mitre Joints in Five Minutes Without Clamps

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Blog entry by shipwright posted 06-27-2011 03:22 AM 5935 reads 33 times favorited 21 comments Add to Favorites Watch
« Part 5: Pressing with Hot Cauls Part 6 of Hide Glue for Beginners series no next part

When I posted “Arnie’s Tea Box” http://lumberjocks.com/projects/50187 one of the comments (Roger) was that these boxes make a great venue for displaying my marquetry. I totally agree but that meant streamlining the process of making the box. First was to come up with a jig to make the corners perfect every time quickly.

Here is what I came up with.

Disclaimer: I’m not a jig person so my jigs are usually utilitarian and often “throw away”.

This photo shows the parts disassembled. Dimensions are irrelevant and I didn’t take any so even I don’t know them.

Here the base piece has been turned right side up. The groove is for the pin in the top part. The cutouts at the apex are to insure that no glue contacts the jig.

Assemble the top part onto the bolt and adjust so that the spaces on the sides fit your stock width. Then slide the pieces of your box together until they match perfectly.

Now remove one piece without moving the other. Coat the end with hot hide glue….Oh yes, this is a commercial for hide glue, sorry. But please bear with me.

Slide the piece back in and as the jig does most of the work, simply squeeze the top of the joint for about 15 seconds or so.

This is the joint removed from the jig about 30 to 45 seconds after the glue was applied. It’s already strong enough to hold together.

A minute later it is strong enough to have it’s spline grooves cut.



A little more hide glue on the splines and slip them into place.

In the time it takes to walk over to the band saw the splines are glued well enough to trim off.

The glue is easy to rub off with your finger. It will ball up like rubber cement. You can throw it back in the pot if it’s not too contaminated with sawdust. Then you can sand the joint and you’re done. The elapsed time between this photo and the one where the pieces were dry fitted is under five minutes and with the splines now in place the piece is strong enough to continue to handle and work with.

Of course in real life it is not necessary to get things done this quickly. Pieces can sit while others are fitted and glued, but this is how fast it can be done.

This joint is perfectly square, both vertically and horizontally, despite the fact that if you look closely, my “hot off the miter saw” cut was not.

That’s it
I made a jig. Who would have thought.

Thanks

Comments, questions, critiques are always welcome.

Paul

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees. http://prmdesigns.com/



21 comments so far

View degoose's profile

degoose

7025 posts in 2022 days


#1 posted 06-27-2011 03:24 AM

Very simple … cool idea….

-- Drink twice... and don't bother to cut... @ lazylarrywoodworks.com.au For lovers of all things timber...

View LittlePaw's profile

LittlePaw

1571 posts in 1745 days


#2 posted 06-27-2011 03:34 AM

It’s so good i’m planning to use it. Hope you don’t mind.

-- LittlePAW - The sweetest sound in my shop, next to Mozart, is what a hand plane makes slicing a ribbon.

View gfadvm's profile

gfadvm

10991 posts in 1357 days


#3 posted 06-27-2011 04:08 AM

This I can understand! Nice jig Paul.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View SPalm's profile

SPalm

4827 posts in 2549 days


#4 posted 06-27-2011 04:18 AM

Sweet.

But you have to include the time to heat up the glue. Which I have no idea how long it takes. So, how long does it take?

Nice jig,
Steve

-- -- I'm no rocket surgeon

View larryw's profile

larryw

295 posts in 1329 days


#5 posted 06-27-2011 04:19 AM

Great idea Paul, keep’em comin’.

-- "everything is beautiful, but not everyone sees it" ~confucius-551-449 b.c.~

View Greg..the Cajun  Box Sculptor's profile

Greg..the Cajun Box Sculptor

5142 posts in 1975 days


#6 posted 06-27-2011 04:39 AM

Great jig…simple and effective. Thanks.

View Randy63's profile

Randy63

230 posts in 1559 days


#7 posted 06-27-2011 04:53 AM

I think this jig would be valuable for anyone building mitered boxes. A little sanding jig for touching up miters on a sanding disk is also a good idea if anyone is having trouble with perfect miters. I think the idea of boxes as a venue for you marquetry is excellent. There have been some fine examples of marquetry boxes here at LJ, and I’m sure you could make some wonderful additions to that collection. I couldln’t agree more about the use of hot Hide Glue, it has the strength and many more convienences the modern glues don’t.

-- Randy, Oakdale, Ca.

View rance's profile

rance

4135 posts in 1827 days


#8 posted 06-27-2011 06:35 AM

It looks like it does a great job Paul. You may just become a jig-man. :) I’m puzzled in how you insert the bottom or the top though. Rabbet I assume? If so, how do you account for expansion? Hey, thanks for sharing.

-- Backer boards, stop blocks, build oversized, and never buy a hand plane--

View shipwright's profile

shipwright

5011 posts in 1465 days


#9 posted 06-27-2011 06:47 AM

Thanks all.

Steve you plug it in in the morning or before 15 minutes before a gluing session and unplug it when you leave the shop. If you’re using it much, it’s always hot.

Rance I used a floating PW bottom in Arnie’s Tea Box and the top is my favorite substrate, MDF, dimensionally pretty stable. I don’t anticipate any problems. I won’t use that top style again though – too hard to glue in nicely.

LittlePaw Fill yer boots. Glad to help.

Thanks again.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees. http://prmdesigns.com/

View sedcokid's profile

sedcokid

2675 posts in 2266 days


#10 posted 06-28-2011 02:07 AM

Paul,
Your blogs are great!! Keep’em a comin!!!

Thanks for sharing!!

-- Chuck Emery, Michigan,

View lightweightladylefty's profile

lightweightladylefty

2658 posts in 2379 days


#11 posted 06-28-2011 04:03 AM

Paul,

Thanks for sharing your brilliance with us. This is such a great learning place.

L/W

-- Jesus is the ONLY reason for ANY season.

View lanwater's profile

lanwater

3087 posts in 1601 days


#12 posted 07-05-2011 10:12 PM

Very interesting jig.

Thanks for all your blogs thay are quite informatyive.

-- Abbas, Castro Valley, CA

View Bertha's profile

Bertha

12951 posts in 1360 days


#13 posted 07-05-2011 10:46 PM

Hide Glue.

Time to bring the pot back out. I haven’t fussed with it in a while. The time feels right.

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View BoxBuilder's profile

BoxBuilder

91 posts in 1797 days


#14 posted 07-14-2011 02:25 PM

Good to know there is someone else out there who uses hide glue!! I started about 2 years ago & wish it had been sooner. Great jig BTW!

-- Richard, Pennsylvania

View Joe Lyddon's profile

Joe Lyddon

7755 posts in 2719 days


#15 posted 07-14-2011 07:14 PM

GOLLY! Had no idea that Hide glue dried SO FAST!

I’ll have to look into that stuff… a little more…

You have a Pot (electrically heated?)...
Can you leave the glue in the pot at all times?
How long does it take to get the glue liquid?
We know it dries FAST… How strong is it for the long haul?
How about water problems?

COOL little jig! Nice job!
Thank you.

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: http://www.WoodworkStuff.net ... My Small Gallery: http://www.ncwoodworker.net/pp/showgallery.php?ppuser=1389&cat=500"

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