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I'm looking for an expert on using magnets to hold models together. I have had some for a long time, but only just started using them. My problem is since they are very small I am having some trouble getting them into the holes I drilled, mainly looking for some tips to make it easier and more efficient.
My magnets are about 1.6 mm in diameter (1/16"), I couldn't find thinner, and they are the same length. My drill bit is 1.5mm wide, I also have a 2 but that is a touch too large. What I did for a test model was put a bit of sideways pressure on the drillbit as I drilled to make it a bit wider, then once I got the magnet in a little bit just pushed it against a table, since it was plastic it reshaped to fit the maget in flush. No glue required, it held tightly, this technique is good for large and flat surfaces, but not so good on smaller things like skink feet, since I want to make the skinks on my stegadons magnetized. The legs bend before the magnet goes further than half way in, and I could see the other side of the foot turning white a bit indicating strain.
The howdah also has sides which I have already glued, so I cannot push it into the table. And since the diameter and length of the magnets is the same, and they are very small, I am finding them very hard to handle and go in the right way, they seem to prefer sitting sideways.
Any tips from those who use rare earth magnets a lot? I am looking at buying more soon, and used amazing-magnets before, if there are better sites elsewhere I am open to suggestions.
I like K&J magnetics, you can buy magnets there that have different holding strength and they often have surplus items that are really cheap. Also, most items they let you buy in smaller units, so you don't have to get 100 magnets when you only need 8.
One little trick to keeping rare earth magnets to hold on to the model instead of popping off is the put glue or epoxy over the magnet after you glue it on. The magnets are definitely strong enough to hold even with the minuscule gap between them and they are much more secure when they are completely surrounded by whatever adhesive you use.
Last edited by frozencore; March 15th, 2009 at 18:42.
Is the magnet 1/16th of an inch or a 1.6 mm magnet? if 1/16th, I would make an effort to find a 1/16th drill bit. This will give you the correct fit. Otherwise, use the 2 mm bit and use some GS and superglue to hold it in place.
I'd still use a 1/16th drill bit. You don't want it to be too loose of a fit.
There are some good "instructional" videos on magnet usage on youtube. I'm at work, otherwise I'd post a decent one.
Eeer Gritz... 1/16 is actually 1/16 of an inch, has nothing to do with metric system, no?
To be honest you're best off either getting magnets to exactly match your drill bits or drill bits to match your magnets. If your bit's too big, its too big!
http://www.armyroster.com Check out my ToP WIP in the projects section!
Along these same lines what size magnets would y'all suggest for vehicles such as russies or baneblades?