Patter thickness?

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Blog entry by Michael smith posted 03-15-2015 05:21 PM 1014 reads 0 times favorited 8 comments Add to Favorites Watch

I need to make patterns for several kids chairs I plan to make!
I would like to know what is the best plywood thickness 1/8” or 1/4” for the router trim bit to follow.
Thanks for your imput

——- first step in project is plans and patterns———

-- Http://

8 comments so far

View longgone's profile


5688 posts in 2731 days

#1 posted 03-15-2015 05:23 PM

I always use 3/8” birch ply as my first choice.

View WoodNSawdust's profile


1417 posts in 599 days

#2 posted 03-15-2015 06:11 PM

make sure that the pattern thickness is at least as thick as the width of the bearing on your router bit. If using plywood I would suggest void-free like Baltic birch.

-- "I love it when a plan comes together" John "Hannibal" Smith

View Sawdustonmyshoulder's profile


396 posts in 3051 days

#3 posted 03-15-2015 11:06 PM

I used 1/2 mdf.

-- Makin' Sawdust!!!

View HillbillyShooter's profile


5811 posts in 1715 days

#4 posted 03-16-2015 04:03 PM

I mainly use either 1/2” or 3/8” Baltic Birch for my templates, just depending on the nature of the template, how I feel and what I have on hand in the scrap bin.

-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington

View Michael smith's profile

Michael smith

52 posts in 628 days

#5 posted 03-17-2015 10:58 AM

Still planning!!!!
Getting no where.
I want to have the back chair legs 1 1/2” square angled back 7.5 deg. Top & bottom.
I can’t find a flush trim bite to cut that from a pattern, cutting half at a time requires two pattern, but position the second pattern is a problem. It not the same as one pass.
Cutting each leg on band saw and sanding to the line is the only way I see,
There has to be a better way???
Make them 3/4” and glue two together?
Making straight back legs the chairs look uncomfortable & may tip over to easy.
I personally don’t like the look of straight back chairs.
I am at a point to flush the table & chairs project,

—- great plans & patterns——poor tools

-- Http://

View Michael smith's profile

Michael smith

52 posts in 628 days

#6 posted 03-20-2015 10:24 AM


-- Http://

View BilltheDiver's profile


250 posts in 2308 days

#7 posted 03-20-2015 03:23 PM

This should do it for you:

-- "Measure twice, cut once, count fingers"

View robscastle's profile


3320 posts in 1627 days

#8 posted 06-06-2015 11:10 PM


I use HDF (High density Fiberboard), I would not consider plywood suitable due to its irregular manufacturing tolerances even marine ply has voids in it.

Be prepared to spend possibly six times the amount of effort in producing the template than cutting the job.

An old addage is minutes spent in planning saves hours in operations later

Check out my telephone box project I spent about six hours in making the templates and one hour using them.

Plus if you are making chairs check out my Maloof Stool blog there may be some lessons learned there you can avoid!!

-- Regards Robert

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