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Radius Patterns

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Forum topic by CaptainAhab posted 01-28-2011 11:23 PM 1490 views 0 times favorited 11 replies Add to Favorites Watch
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CaptainAhab

214 posts in 2264 days


01-28-2011 11:23 PM

Am I the only one getting tired of looking for just the right bucket, paint can, dog food dish, etc to trace the radius I want!? A nail and string are not always an option. I have been looking online for quite awhile trying to find a set of CNC cut radius patterns…..with no success. My son thought he had found some so got them for my christmas….they were architectural scales !!!

Anyone with leads or sources for such a product, please let me (us) know.

Thanks,
Dave

-- Dave www.bluesagehues.com


11 replies so far

View cabmaker's profile

cabmaker

1507 posts in 2276 days


#1 posted 01-28-2011 11:44 PM

Are these to be for cab. door rails or what ? I normally am able to produce any radius I need with the help of an ext. table at the bandsaw. Are you needing templates with long term integrity or one time use ?

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CaptainAhab

214 posts in 2264 days


#2 posted 01-28-2011 11:54 PM

Permanent tool quality templates is what I am looking for. I don’t mass produce anything, it’s all one-off art. And I frequently need to draw single and multiple radii. I contacteda a plexiglass company, but they wanted around $300 to custom make a set! There has to be something out there.

-- Dave www.bluesagehues.com

View Dennisgrosen's profile

Dennisgrosen

10850 posts in 2582 days


#3 posted 01-29-2011 12:00 AM

why don´t you make them yourself out of 1-2 mm 5 layer-airo-plywood
on a Bandsaw with a cirkelcutting jiig with a spring of 1 or 2 mm between the diameter
of the cirkels
a halfsheed shuold be enoff

take care
Dennis

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CaptainAhab

214 posts in 2264 days


#4 posted 01-29-2011 12:03 AM

Not out of the question, Dennis, but if I did it would have to be plexi. See-thru is a huge advantage at times.

-- Dave www.bluesagehues.com

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Dennisgrosen

10850 posts in 2582 days


#5 posted 01-29-2011 12:15 AM

to be able to see is always a big advantice ….LOL

the other option from the plexi
is the two legged devider with a pencil in to draw cirkels with (can´t remember the english word for them)

but ells the airo – plywood is a great thing , I think you can get it down to 0,4mm thickness
and is very durable for pattern´s or other lightwaight construction´s , ....not sheap but dang its good …LOL

good luck with the hunt Dave
Dennis

View DrDirt's profile

DrDirt

4169 posts in 3209 days


#6 posted 01-29-2011 12:22 AM

I use these, but this might be too flimsy for what you want to do?
They are corner templates from Eagle America – they are see through.

http://www.eagleamerica.com/product/400-1120/saw_blades_and_accessories

-- 'Political correctness is fascism pretending to be manners' ~George Carlin

View CampD's profile

CampD

1475 posts in 2953 days


#7 posted 01-29-2011 12:35 AM

I’ve made my own along the way.
I have a lot of scrape plexi (I save all of these scraps more then i do wood)
But! it never fails the one I’m looking to do I dont have yet.
I was a draftsman in a different time and have ”A lot” of templates, that i use to make the initial radii

-- Doug...

View Viktor's profile

Viktor

456 posts in 2886 days


#8 posted 01-29-2011 12:47 AM

How about a compass?

Was used for the last 7000 years.

View CaptainAhab's profile

CaptainAhab

214 posts in 2264 days


#9 posted 01-29-2011 01:26 AM

thanx Dr Dirt, I will check that out. Viktor, not always possible, and I need up to 12” r at least. A friend of mine uses large compass but patterns would be much simpler for shop use.

-- Dave www.bluesagehues.com

View Dan Lyke's profile

Dan Lyke

1510 posts in 3592 days


#10 posted 01-29-2011 02:19 AM

If you’ve got a router with good dust collection, or someone willing to hold a vacuum to pull the plastic chips away from the bit, cutting your own out of Plexi or Acrylic isn’t that hard. The issue with plastics and routers is just keeping the plastic from melting and gumming up the tools, getting the bits clear helps a lot.

Although you might quickly discover that $300 is a bargain…

-- Dan Lyke, Petaluma California, http://www.flutterby.net/User:DanLyke

View CampD's profile

CampD

1475 posts in 2953 days


#11 posted 01-29-2011 09:47 PM

I use Trammel points to make my bigger radius’s.
You can make any length beam as needed.
Mine as shown you can replace one point with a pencil.
I make temp’s on the band saw, then finish with the disk sander

-- Doug...

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