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Kumiko Angle and Thickness Jigs

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Project by DreganTepis posted 02-25-2020 04:12 PM 3238 views 11 times favorited 12 comments Add to Favorites Watch

I wanted to learn Kumiko, so it is high time I made the necessary tools!

Angle jigs are cut at 45, 22.5, 67.5, and a bunch of 90s! The jigs are double sided, so I can cut other angles if needed for more complex patterns in the future. Steel threaded inserts and aluminum stops to adjust length. Finished in monocoat pure.

The thickness sled is unfinished, because I wanted to try it out first. The bed is made of 3 – 3/4” flatsawn oak pieces turned on their side and glued together to make a laminated quatersawn base. This gives me a capacity of 2-1/4” by 28”. Wings were rabbited to the same width as the plane, and matched the dept of the bed. Attached with two stainless insert per side. Front stop is adjustable and replaceable. Thickness is determined by placing material under the wing of the desired thickness and tightening the screws. This can also be used for non-parallel shapes, such as chopsticks and wedges, by using different thicknesses front to back or side to side. I can achieve very accurate dimensions with this!

Last pic is my first attempt… A pattern called “Asa no ha”. It’s going much better than I thought!

For anyone wondering why I wanted to get into Kumiko; My next big project will be an entertainment center, and it will need airflow for the electronics. Instead of metal or plastic vent inserts, I decided to make airflow part of the aesthetics. I will be using a series of these patterns in a frames to make an alternative to a raised panel door for the cabinet.

-- Red pencil, red marker, marking knife... doesn't mater, the wood will end up the same color.





12 comments so far

View mafe's profile

mafe

13102 posts in 4145 days


#1 posted 02-25-2020 05:29 PM

Nice, I never saw how this was made before, just watched a handful of videos.
Fine jigs.
Best thoughts,
Mads

-- MAD F, the fanatical rhykenologist and vintage architect.

View Peteybadboy's profile

Peteybadboy

3283 posts in 3006 days


#2 posted 02-25-2020 08:29 PM

Dregan, I don’t know the art form. I do think the finished product is really cool. Those jigs are fantastic. Perhaps I should make a thickness jig for splines? Looking forward to new work from you.

-- Petey

View DreganTepis's profile

DreganTepis

96 posts in 1568 days


#3 posted 02-25-2020 08:34 PM



Dregan, I don t know the art form. I do think the finished product is really cool. Those jigs are fantastic. Perhaps I should make a thickness jig for splines? Looking forward to new work from you.

- Peteybadboy

Thank you sir! Yes, it would be great for getting an exact thickness for miter splines, and you could get away with a much shorter bed since you wont need cabinet-door size pieces!

-- Red pencil, red marker, marking knife... doesn't mater, the wood will end up the same color.

View Oldtool's profile

Oldtool

3198 posts in 3247 days


#4 posted 02-25-2020 10:49 PM

Pretty handy thin strip jig, can be used for a lot of applications. I see you gauge the material final thickness by setting the side rails with shims, slick. I think I’ve got to make one of these, to create small box partitions.

-- "I am a firm believer in the people. If given the truth, they can be depended upon to meet any national crisis. The point is to bring them the real facts." - Abraham Lincoln

View Redoak49's profile

Redoak49

5186 posts in 3045 days


#5 posted 02-25-2020 11:26 PM

Very interesting and unique.

View swirt's profile

swirt

6115 posts in 4028 days


#6 posted 02-26-2020 02:52 AM

Very clever jigs. Nicely done. Good luck with your adventure.

-- Galootish log blog, http://www.timberframe-tools.com

View Dutchy's profile

Dutchy

4069 posts in 3225 days


#7 posted 02-26-2020 07:15 AM

Very nice. I hoppe we will see more from this.

-- https://dutchypatterns.com/

View Kcmwoodworks's profile

Kcmwoodworks

14 posts in 429 days


#8 posted 02-28-2020 01:57 AM

once You start it’s hard to stop I have a stack of different jigs the hard part is figuring which patterns to use. Enjoy the journey. Be sure to post picks of the finished project.

-- KCM. “When you know you’re an expert, its time to be careful”. My Dad!

View Tim Dahn's profile

Tim Dahn

1625 posts in 4621 days


#9 posted 09-02-2020 08:04 PM

Very nice!

Where did you find info about the angle jigs?

-- Good judgement comes from experience and experience comes from poor judgement.

View DreganTepis's profile

DreganTepis

96 posts in 1568 days


#10 posted 09-02-2020 08:15 PM


Very nice!

Where did you find info about the angle jigs?

- Tim Dahn


There are several designs online, and I meshed a few of them together. The actual angle is determined by the pattern you need to create.

Hindsight is 20/20 though, and if I need more angles, I have an idea for building them differently. Fine tuning length is a bit of trial & error on all designs like this. I would like to make a version with a fine thread screw as the stop, with a knob and lock at the rear of the angle jig. This way I can fine tune the piece length in the same way someone adjusts a hand plane.

-- Red pencil, red marker, marking knife... doesn't mater, the wood will end up the same color.

View Tim Dahn's profile

Tim Dahn

1625 posts in 4621 days


#11 posted 09-10-2020 01:07 PM

Oh I like that adjustment idea. Maybe you can add that to the ones you made.

-- Good judgement comes from experience and experience comes from poor judgement.

View DreganTepis's profile

DreganTepis

96 posts in 1568 days


#12 posted 09-10-2020 02:51 PM



Oh I like that adjustment idea. Maybe you can add that to the ones you made.

- Tim Dahn


Good idea… I might, but I’d rather see how it works on a new one before mucking with the working ones!

-- Red pencil, red marker, marking knife... doesn't mater, the wood will end up the same color.

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