Here’s the prototype of my golden divider, made with 1/8” tempered hardboard. It’ll do for now, but I have plans to make this from something a little nicer…
The longest legs on this one are 11 3/8” long, so it’s a little bigger than the ones I’ve seen posted elsewhere.
You can get my Sketchup Model on the 3D Warehouse by searching for “Jawhorse-Sawdust”
Mark
-- -- "there are many good reasons to use old hand tools, but moral superiority is NOT one of them..."
5 comments so far
PurpLev
home | projects | blog
8654 posts in 5145 days
#1 posted 12-02-2010 08:48 PM
very cool. still want to make one of those, but the thing is – I do all the design in SU where it’s just too easy to multiply/divide by 1.618…
-- ㊍ When in doubt - There is no doubt - Go the safer route.
Mark Whitsitt
home | projects | blog
86 posts in 4476 days
#2 posted 12-02-2010 09:37 PM
PurpLev,
I know… I “pre-build” just about everything I make in Sketchup first… sort of work out the construction process there…
but sometimes I like to improvise with a scrap or other piece of wood in the shop, and having a few design/layout tools out there helps a lot…
for instance, I’m planning to make a couple of boxes out of crown molding, and with the calipers, I can pretty much do it all in the shop without any math beyond addition or subtraction (for the box bottom grooves…)
M
-- -- "there are many good reasons to use old hand tools, but moral superiority is NOT one of them..."
TopamaxSurvivor
home | projects | blog
24948 posts in 5173 days
#3 posted 12-03-2010 12:57 PM
Studie gave Todd and I the makin’s for those. They are hard to get exactly on the money ;-( I was thinking that making them proportinal just using an X design as in one of your previous blogs would be the best way to go.
-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
Mark Whitsitt
home | projects | blog
86 posts in 4476 days
#4 posted 12-03-2010 05:05 PM
TS,
You’re right about the precision issue and the simpler X design; reduce the complexity to reduce the error. But remember that Phi (the golden ratio) is an irrational number that keeps going and going (i.e. 1.61803399…), so you can’t ever get it exactly.
Besides, I’m only using this as a improvisational design tool, and I figure the mathematical error in the tool is all part of making a work piece uniquely mine! Once I figure a couple of rough dimensions with the divider, the rest is all rulers and stop blocks!
Mark
-- -- "there are many good reasons to use old hand tools, but moral superiority is NOT one of them..."
mafe
home | projects | blog
13872 posts in 4586 days
#5 posted 01-16-2011 02:18 PM
Cool, I will copy the locking mecahnism and put this on mine.
Best thoughts,
MaFe
-- MAD F, the fanatical rhykenologist and vintage architect.
Have your say...