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A Trammel of Archimedes made from walnut and maple. A fun birthday gift for my nephew.
Jun 24, 2012
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44 posts in 1355 days
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trammel of archimedes
do nothing machine
5157 posts in 2618 days
#1 posted 06-24-2012 05:58 PM
Intriguing, nicely animated also.
-- "Checking for square? What madness is this! The cabinet is square because I will it to be so!" Jeremy Greiner LJ Topic#20953 2011 Feb 2
1892 posts in 2044 days
#2 posted 06-24-2012 06:10 PM
A nice project
I have already seen this : A jig to cut an ellipse with a router
Thanks for sharing
-- Diggerjack-France ---The only limit is the limit of the mind and the mind has no limit
1310 posts in 1891 days
#3 posted 06-24-2012 06:32 PM
I have been working one of these for myself for a few days now.. :) They’re so intriguing!
-- Lis - Michigan - http://www.missmooseart.com - https://www.etsy.com/people/lisbokt
15687 posts in 2581 days
#4 posted 06-24-2012 08:10 PM
Looking good! Gives me an idea for a marble pump ;-)
-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
57 posts in 1702 days
#5 posted 06-24-2012 11:22 PM
Ah!! The old BS grinder. First saw one of these back in ‘58-’59. Glad to see it’s still around for another generation. Nice project though.
12896 posts in 1596 days
#6 posted 06-25-2012 12:32 AM
I posted several of these but I think you have a different design yet. Looks like it works smoothly. The animation is cool but WAY beyond my computing skills.
-- " I'll try to be nicer, if you'll try to be smarter" gfadvm
546 posts in 1217 days
#7 posted 06-25-2012 03:52 AM
Smoke grinder, is how I heard them called. I like the pop rivet idea~ no screws to come loose.
I hate loose screws. Well, aside from a few old friends.
-- Dan V. in Indy
3966 posts in 2273 days
#8 posted 06-25-2012 04:57 AM
Good job. These are fun to make and you did a good job.
I made one of these out of left over maple, about 25 years ago, and kept on my desk at work. Every time my engineering manager came to my cubical he would pick it up and play with it!
After a few months he finally asked me what this is, or called, and I told him it was a ”bulls..t grinder”! He never put two and two together and now you know why I made it just for him!
These things never get old!
-- "I never met a board I didn't like!"
97 posts in 2222 days
#9 posted 06-25-2012 06:25 AM
4734 posts in 1773 days
#10 posted 06-26-2012 10:27 AM
Awsome animation.Great project.One of jigs I would like to have in my garage.
-- Ivan, Croatia, Wooddicted
1667 posts in 1794 days
#11 posted 06-28-2012 06:39 PM
Made one of these in Jr High shop class over 50 years ago. Teacher called it an air grinder back then. PC was in action there I think. I’ll bet he called it something else to adults.
-- The nicer the nice, the higher the price!
410 posts in 1107 days
#12 posted 07-02-2012 08:07 AM
These are great for the fidgity folks that visit your office. Or, give one to the “Cranks” in your life.
-- DJ Peck, Lincoln Nebraska. I think of my shop as Fritter City. I am the Mayor.
249 posts in 884 days
#13 posted 01-25-2013 02:33 AM
-- Dave, from Canada, http://simplywoodproducts.ca
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