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View Full Version : How do I make a perfect circle



morgans432
03-15-2008, 05:57 PM
without using the jasper jig. I look over at realmofexcursion and that sticky is gone now for some reason. I really don't want to go out and get one of these for a one time thing. Pictures or anything would be awsome.

97gp
03-15-2008, 05:59 PM
Check that out.

http://www.fiberglassforums.com/showthread.php?t=99

budahbuddy803
03-15-2008, 05:59 PM
how about just a regular jig saw? Make your circle with a protractor and then cut that bish out.... thats what i do and i have never had any problems.

bonesninja
03-15-2008, 05:59 PM
ummm draw it then use a jig saw

morgans432
03-15-2008, 06:00 PM
I just got a router so I want to try that out I use to do the jigsaw but never really had great results with it.

SethPhillips
03-15-2008, 06:02 PM
i allways use a circle jig w/ a rotor.. perfect holes for me!

morgans432
03-15-2008, 06:03 PM
i allways use a circle jig w/ a rotor.. perfect holes for me!

Thats what I plan on doing just need to make a circle jig

BrianChia
03-15-2008, 06:17 PM
Get some 1/4" MDF and the proper screws to attach to the base of your router.

bjfish11
03-15-2008, 06:48 PM
Get some 1/4" MDF and the proper screws to attach to the base of your router.

Yes, this is how you can do it. You are essentially making your own jig.

budget76
03-16-2008, 10:06 PM
Just like they said, make your own. I made one a couple months ago. Took a bunch of careful measurements, and it worked out perfect. If you're building a decent box, you should easily be able to make one. Took me a while, because I didn't want to f*** it up, but it's easy. If you have no idea where to start, Google it. I found a good write-up to make sure the way I planned it was right.

FWIW used 1/4" scrap wood ****. Cardboard would work in a pinch.

iDesignBoxes
03-16-2008, 10:12 PM
1. Threaded rod and one bolt.
2. Drill hole in end of rod so that a nail or a screw will fit inside.
3. Attach pencil to bolt on rod.
4. You now have an adjustable circle marker!

bjfish11
03-16-2008, 10:16 PM
Im going to say I would not trust a piece of cardboard... LOL

sqhertz
03-16-2008, 10:20 PM
what about one of those 'all in one cutting tools'? like the rotozip? they do sell circle jigs for them...

bonesninja
03-16-2008, 10:20 PM
what about one of those 'all in one cutting tools'? like the rotozip? they do sell circle jigs for them...

thats what i use.....works great

miker
03-16-2008, 10:22 PM
thats what i use.....works great

X2! works really well.

sqhertz
03-16-2008, 10:23 PM
wonder how many others use em...i see them at work (sears) and always wondered about them. how many passes does it take to get through 3/4 mdf?

bonesninja
03-16-2008, 10:24 PM
wonder how many others use em...i see them at work (sears) and always wondered about them. how many passes does it take to get through 3/4 mdf?

lol...just 1

sqhertz
03-16-2008, 10:28 PM
lol...just 1

no ****? i think ill have to snag one up when they start to go on clearance. bits wear down quick or no? how many amps does yours have?
i can see my jigsaw getting thrown in the closet pretty soon...

HellsRise
03-16-2008, 10:29 PM
I've had nothing but bad luck with the rotozip.

1) It's loud and annoying as hell. (whining sound to it)
2) I've burned 3 bits for 2 circles.
3) It burnt the wood off more than it cut it.

miker
03-16-2008, 10:29 PM
no ****? i think ill have to snag one up when they start to go on clearance. bits wear down quick or no? how many amps does yours have?
i can see my jigsaw getting thrown in the closet pretty soon...

Deffinatly more acurrate for tighter turns than a jig saw.

Bits break easily though..

EDIT: a little harder to control though....

bonesninja
03-16-2008, 10:36 PM
no ****? i think ill have to snag one up when they start to go on clearance. bits wear down quick or no? how many amps does yours have?
i can see my jigsaw getting thrown in the closet pretty soon...

i have a first gen Zip 3.6 amps....made my own jig...has a 24" diameter capability


http://i198.photobucket.com/albums/aa108/bonesninja/DSC02483.jpg


http://i198.photobucket.com/albums/aa108/bonesninja/DSC02484.jpg

sqhertz
03-16-2008, 10:37 PM
Deffinatly more acurrate for tighter turns than a jig saw.

Bits break easily though..

bah. i did get a plunge/fixed base craftsman professional combo on clearance for $15 without the collets. :p: ***** is loud as ****, never used one though and i still havnt got around to ordering the collets.

http://www.sears.com/shc/s/p_10153_12605_00917245000P?vName=Tools&cName=Portable+Power+Tools&sName=Rotary+%26+Spiral+Cutting+Tools
http://www.sears.com/shc/s/p_10153_12605_00926561000P?vName=Tools&cName=Portable+Power+Tools&sName=Rotary+%26+Spiral+Cutting+Tools
have these at work but the reviews look terrible on the regular model , not the pro. version. either these guys beat them to hell or craftsman quality went down the shitter. both come with a circlejig and other crap...hm.

bonesninja
03-16-2008, 10:39 PM
Deffinatly more acurrate for tighter turns than a jig saw.

Bits break easily though..

EDIT: a little harder to control though....

i've never broken a bit, and with my jig they are cake to control

sqhertz
03-16-2008, 10:43 PM
http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&langId=-1&catalogId=10053&productId=100596161&N=10000003+90401+502104
http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&langId=-1&catalogId=10053&productId=100003212&N=10000003+90401+502104

im liking that dewalt. .25" collet. probably could throw a roundover in there if need be , lol.