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  #11  
Old 06-15-2011, 06:01 PM
cjp cjp is offline
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Quote:
Originally Posted by El Cheapo
I use a Dremel with circle cutter attachment for all the centering rings and baffle plates I have cut recently. Unfortunately, I have not been able to find the circle cutter locally and have to order a new one for myself and the shop online. It works like a champ and is easy to use.

What size body tube did you make them for?Right now I'm working on a BTH70 ,and my next rocket is the same size with a 29mm motor mount.The cutting tool is under $10 for the Dermel that includes free shipping.I think I seen it on their website.
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  #12  
Old 06-15-2011, 06:06 PM
cjp cjp is offline
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Originally Posted by georgegassaway
Here's a link to my website, showing the Arc-Scribing method I use for making custom centering rings:

http://homepage.mac.com/georgegassa...Rings/Rings.htm









- George Gassaway

Thanks for the website,I'll look into this.
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  #13  
Old 06-15-2011, 06:08 PM
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Originally Posted by qquake
Yeah, it held up fine in my garage. But we don't get a lot of humidity here. I used it a lot at the time for drilling pen blanks, one of my other hobbies. The only problem I remember having with it was the chuck would come out sometimes. But after I cleaned the internal and external tapers, and tapped it in with a hammer, I didn't have any more problems.

I saw the Ryobi and really liked that one.$119 at Home depot.
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  #14  
Old 06-18-2011, 07:26 PM
cjp cjp is offline
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I got a great Father's gift one day early,a 10" Skil drill press from my daughter.Ordered a circle wheel cutter made by Pro Tool from Amazon.Now I will get a jig saw to cut fins and I should be set.Happy Father's day to all dads on Ye Olde Rocket Forum.cjp.
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  #15  
Old 06-23-2011, 07:23 PM
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Maniac BAR Maniac BAR is offline
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Quote:
Originally Posted by El Cheapo
I use a Dremel with circle cutter attachment for all the centering rings and baffle plates I have cut recently. Unfortunately, I have not been able to find the circle cutter locally and have to order a new one for myself and the shop online. It works like a champ and is easy to use.


The Dremel circle cutter works just fine. Just don't make a full cut completely through the material all at once. Cut halfway through and then flip the piece over and make the finish cut. Once the ring is free, make a smoothing finish cut all the way around the outside again. Use sandpaper or a Dremel sanding drum to finish the inside cut.
Also, you can save a bit of cash by using the RotoZip bits instead of the Dremel ones. I think they cut better as well.
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