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Post by Deleted on Nov 19, 2013 18:48:49 GMT -7
I tried using my wife's Dremel tool that has variable speeds. I used it on the lowest setting, but it still seems to be too fast. The piece I was working on melted.  Is it just a matter of learning the right technique and practicing with it more , or is there something else that has a slower rpm level? Thanks, Russ |
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Post by Deleted on Nov 19, 2013 19:09:54 GMT -7
What are you trying to do Russ? Sand or cut?
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Post by Deleted on Nov 19, 2013 21:32:11 GMT -7
Sand right now. What I did was I chocked(?) a piece I glued to a metal tube in the tool and spun it while holding it against a sanding stick. Round piece I was trying to reduce the diameter of while keeping it round :-).
But I also want to use it (if possible) for grinding off stuff like molded on exhaust systems, etc. But I am completely open to other suggestions.
Thanks,
Russ
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Post by Deleted on Nov 20, 2013 6:44:27 GMT -7
The only time I use the Drexel for sanding is when I'm doing big chops or resin. It does get hot fast and will melt your plastic. Your best bet is some good ol' elbow grease to sand. Maybe even cutting with the blade and then sanding.
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Post by Deleted on Nov 28, 2013 1:27:34 GMT -7
I have both a plugin variable speed dremel and a battery powered, 2 speed, B&D Wizard. I much prefer the wizard, but the batteries tend to always die right in the middle of doing something, or lose their charge in between uses. With either one though, I find that the Dremel tips do tend to heat up and melt the plastic, either resealing the cut you just made, or distoring the plastic around where you're sanding.
Several years ago I got a set of diamond dust gringing tips from Harbor Freight that fit the Dremel. The work doesn't go as fast as with the dremel tips, but they seem to stay a lot cooler, giving better control. I have also used drill bit in the dremel like a router. They cut as they spin, and if you don't try to go too fast, make a nice smooth cut. This works great for removing a section within a piece.
For the reducing the diameter project you were working on, have you tried a cordless drill? They don't spin as fast as a Dremel, and might not melt the plastic. And once you get close, if you can get it held in place, a cordless screwdriver would let you do the final touches, using fine grit sandpaper/sanding stick.
I haven't tried it, so don't know if it would work, but I just had an idea for holding the piece for the cordless screwdriver... If you cot a set of the drill bits with the hex-base that fit the screwdriver. you could slide one end of the metal tube you're using to hold the plastic piece over the closest bit (maybe having to tape it on so it doesn't slide off), and then have your plastic piece in the other end of the tube.
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Post by CustomMuscle on Nov 28, 2013 3:57:45 GMT -7
I use a cordless dremel for sanding off excess plastic and it works great for that. I use one of the round end attachments that has different grades of sand paper that slips over a round piece of rubber. I can post a pick of it if ya don't know what i mean. There are also various kinds of sanding stone attachments that won't melt the plastic if your careful.
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Post by Deleted on Nov 28, 2013 10:13:34 GMT -7
Thanks, guys.
Some good ideas I'll have to try.
Russ
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Post by Grandpabeast on Nov 28, 2013 16:12:16 GMT -7
First look at the prize package for the up coming anniversary contest. My dremel is like this one. I have found over time I have gotten better at using it without burning a hole in the body! Ha ha but here is a trick. I took a short about 6 ft heavy drop cord and cut it in half . Stick both ends into a plastic electrical box. Then reconnect the green and white wires and wire the black threw a dimmer switch. Then put a cover on it. With this you will be able to turn down the current to were the dremel barely turns. If you do this please be safe and use a heavy cord.
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Post by Deleted on Nov 28, 2013 16:56:22 GMT -7
Lol. I thought this was a forum for model cars not electrical tools rewiring. Hahaha. Just messing with u Beast. Or get the Dremel with the adjustable speed. I'm just saying. Just be safe.
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Post by Grandpabeast on Nov 28, 2013 19:59:54 GMT -7
Haha. Oh sure take the easy way out ! I should have pointed out that yes the prize and my latest dremel are variable speed but my old one ( from way back ) was just off and on thus I built the variable speed drop cord !
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