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Post by roosclan on Nov 17, 2008 0:01:42 GMT -6
Well, I have 3 boys in Scouts this year and 3 more coming up, so I will be in need of a bunch of tungsten for the next several years. Since it's so expensive, I need some way of removing it from the prior year's cars to re-use without destroying the cars. We mostly use the cubes.
Last year we used epoxy to secure the cubes. This year I want to use something that will allow me to remove the weight.
A) Is there any epoxy releasing agent available so I can re-use the weights?
B) If I use CA glue, will acetone work to dissolve it so I can get the weight out?
C) Will white glue be strong enough to hold it in place and keep them from rattling around, yet break free when I'm done with the car?
We will be adding a bottom piece of .005"brass or 1/64" hobby plywood to the car to streamline it and hold it in like last year's cars.
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Post by MaxV on Nov 17, 2008 10:28:25 GMT -6
I would go with hot glue. It stays soft, so it can be cut out.
I would avoid white glue, yellow glue, or CA glue, as none of these fill gaps well (important when gluing tungsten). In fact, both white and yellow glue tend to shrink as they dry.
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Post by Lucky 13 on Nov 17, 2008 11:22:39 GMT -6
Another idea would be to use tungsten plates !! They can be screwed onto the car and are very easy to move (adjust) and remove when the race is over. You can stack them as well.
Lucky 13
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Post by sporty on Nov 17, 2008 12:12:06 GMT -6
I use epoxy and have to say that I have re-used the tungsten without destroying the car. I also have destroyed the car also.
When I remove wood for the weight. I make the area larger, so there is a space from the wood to the weight. I then use my dremel to cut out around this area. To remove the weight.
This does not always work, but has worked none the same.
I am not sure hot glue will hold well enough, especially if adding alot of weight in a confined area. It may drop out. Perhaps there is some form of hot glue that works better than others to try.
I could ponder a few idea's to try, but none may be appealing to try.
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Post by roosclan on Nov 17, 2008 21:08:03 GMT -6
I would go with hot glue. It stays soft, so it can be cut out. Not a bad idea! My wife has plenty of that around here, what with 6 kids and all... Why is it important to fill gaps when gluing tungsten? Or is it a moot point for me since I will be covering the bottom? |
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Post by roosclan on Nov 17, 2008 21:10:39 GMT -6
Another idea would be to use tungsten plates !! They can be screwed onto the car and are very easy to move (adjust) and remove when the race is over. You can stack them as well. Lucky 13I hadn't thought of that. My Bear's design won't allow for the plates, but my Webelo's and my Tiger's might. I can recess them in the body so they will be flush with the bottom. |
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Post by zeezop on Nov 18, 2008 6:46:50 GMT -6
Have you thought about making something to clamp down the tungsten? First idea would be to use some balsa and cut out room for the tungsten. Leave extra room on the sides and and then glue/screw down the balsa. When you want to re-use unscrew the balsa and remove the tungsten.
Haven't tried this, but seems like it would work fine. Of course you may want to use a different material, copper strips?
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Post by roosclan on Nov 25, 2008 19:00:42 GMT -6
Well, I forgot that I had used some Testors wood/metal cement on my Bear's car. I pried off the 1/64" plywood on the bottom and managed to get some hemostats under a corner of one cube and pried it out. After that, I had room to grab them with some needle nose pliers and they came out with a little effort. I glued the bottom back on and the car looks just as good as always.
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