Magnets!

[Primoscustoms]

Ok guys, whats your trick. Magnets drive me nuts when trying to get them on a tight spot. Sure it seems easy but it can get pretty tricky.

SOmetimes I glue one the wrong way and after it drys I find out the hard way.

Anyone have a fool proff way of getting magnets right the first time?

[enclinedesigns]

Yes..... Rare earth magnets from radio shack... they are supper little and really strong. Plus cheap.

I dremel a little spot about the depth of the magnet, glue in one side first. Let it dry. once it is good and tight, I put the other magnet on it so I know which side is correct, dap some glue on it, then put the other part down onto the magnet. Give it a minute then SLIDE the pieces apart!!!

[frenzyrumble]

haha. I know your problem.

The safest way is too either (a) keep your magnets organized so that the polarities are all the same direction (sometimes it's possible to even label them all) or (b) affix 1 magnet to the connecting area, let it dry, then affix the other magnet on the connecting part (assuring the polarities match)

your best bet for magnets is http://www.gaussboys.com/ for rare earth magnets. The best around. They keep their strength a lot longer than the ones found in retail too.

I tend to always be using the same 2 types :

http://www.gaussboys.com/files/images/thumbs/D0301.jpg (http://www.gaussboys.com/ndfeb-magnets/D0301.html) See details (http://www.gaussboys.com/ndfeb-magnets/D0301.html) 3mm x 1.5mm N38 Nickel Plated Disc Magnet (http://www.gaussboys.com/ndfeb-magnets/D0301.html)
Model: D0301





http://www.gaussboys.com/files/images/thumbs/D0601.jpg (http://www.gaussboys.com/ndfeb-magnets/D0601.html) See details (http://www.gaussboys.com/ndfeb-magnets/D0601.html) 6mm x 1mm N38 Nickel Plated Disc Magnet (http://www.gaussboys.com/ndfeb-magnets/D0601.html)
Model: D0601
Our price: $0.07
Our price: $0.06

When you buy in bulk (100 or so) the price drops even lower. I've been able to pick these up at retail, but usually the D0601 type are about $5 for 6 - which is a rip off.

[- Z -]

Here is a sure fire way to get the polarity correct. Whip out a sharpie and mark the sides that attract with a dot, plus, face, whatever you want. That way you know what sides to have showing when you epoxie.

[Primoscustoms]

yup, I buy the same one Mike. Yea my man problem with EVERYTHING is patients. I jump the gun and bam, it comes jumping out of the hole full of half dried glue. Magnets are just a bitch to me.

I just need to learn how to chill. But I have zero time to do this stuff. 2 young kids, 1 on the way. I get started 10 at night, then wake up for a train at 5am.

[frenzyrumble]

In a tutorial I posted here, I use the x-acto blade for placing the magnet into the hole and leaving it in place until the adhesive's dry (then snap away the x-acto blade)

It's always a pain in the ass when trying to affix 2 magnets near each other and they can't help but magnetizing onto each other...

[Anovasinn]

I install mine just like Encline. i will only tack the magnets in (use a small amount of glue) then add glue to the edge and let it seep in. As far as drilling holes sometimes i have a drill bit that is slightly bigger and it fits perfect if not i drill a pilot hole then ream it out with a dremel stone. They sell a very nice stone set at walmart that is meant for chain saw blades it is a stone only slightly wider than the shank it is attached to

[Boggs6ft7]

your best bet for magnets is http://www.gaussboys.com/ for rare earth magnets. The best around. They keep their strength a lot longer than the ones found in retail too.


Have you tried the epoxy coated ones?

[frenzyrumble]

no, they available on that site? I would like some colored ones, that would be nice...sometimes it's hard to keep paint on magnets, seeing they are pressed and slid against a lot.

[Boggs6ft7]

no, they available on that site? I would like some colored ones, that would be nice...sometimes it's hard to keep paint on magnets, seeing they are pressed and slid against a lot.

http://www.gaussboys.com/magnets/Epoxy-Coated-Magnets/

Seems like they would be better for gluing and painting.

[mampy]

I dremel a little spot about the depth of the magnet, glue in one side first. Let it dry. once it is good and tight, I put the other magnet on it so I know which side is correct, dap some glue on it, then put the other part down onto the magnet. Give it a minute then SLIDE the pieces apart!!!

This is how I attach magnets as well.

It just really sucks when you have to attach a second pair of magnets in the vicinity of another part with an already-attached magnet. :eek:

[frenzyrumble]

http://www.gaussboys.com/magnets/Epoxy-Coated-Magnets/

Seems like they would be better for gluing and painting.

nice, never saw those. ordering them now! thanks! :jesus:

[IceWilly]

Bump for some more information. With my upcoming devastator build I was hoping that maybe I could utilize magnets to connect Long Haul to the waist and Hook to Long Haul.

At my parents house they had some really really strong magnets on the fridge. They were little cyclinders, maybe 1/8" diameter and 1/4" or less long. Two of those suckers together took a LOT of force to pull apart. If i set it up in a set of 4 pairs in a square pattern... I have to believe I could even lift the bottom half of devastator and it wouldn't come apart. Are the magnets talked about in this thread that strong? is there a reason not to use magnets in these areas? or just rubbing paint concerns. Certainly it would limit the rotation of the joint if I did it like I mentioned above.

Also, a little feedback on those epoxy coated magnets would be great if you guys have used them yet.

http://www.gaussboys.com/files/images/full/C0609.jpg

more like this size, but those babies were super strong. Gaussboy says that one holds two pounds, how quick do those wear out their attraction force?

Also, I don't understand the ratings on this site.

it has a 6mm x 9mm cylinder rated at 2lbs
but a 6mm x 2mm rated a 3lbs.

maybe material difference? ugh. It certainly seems that disks are more powerful that cylinders, even of the same diameter and only altering thickness. I don't understand it, but I suppose you have to trust their ratings

[Mangamike]

Here is a sure fire way to get the polarity correct. Whip out a sharpie and mark the sides that attract with a dot, plus, face, whatever you want. That way you know what sides to have showing when you epoxie.
I second this comment, always the best way to know for sure

[mrcharlievo]

Good info, I never knew that magnets lose their attraction force over time...

[- Z -]

Good info, I never knew that magnets lose their attraction force over time...

Rare earth magnets should not....... or at least to the point where it is noticeable.

[frenzyrumble]

i've been meaning to try the epoxy coated magnets, I need to re-order soon, so might grab a few. Don't bother trying to build a combiner with magnetic connectors, it won't happen. even if a magnet is marked to hold 2 lbs, it means straight - if bend a hair, it will fall off.

[- Z -]

i've been meaning to try the epoxy coated magnets, I need to re-order soon, so might grab a few. Don't bother trying to build a combiner with magnetic connectors, it won't happen. even if a magnet is marked to hold 2 lbs, it means straight - if bend a hair, it will fall off.

Agree 100%, however have you ever thought of lining a ratchet joint with those teeny tiny magnets. I have a larger one on the works that is SUPER strong but is still able to ratchet. I also have a ratchet joint that has magnets inside for the overall stability. One in the socket and the other in the pin....

F-R.... PM coming your way...

[frenzyrumble]

I'm telling you, as strong as a magnet might be as soon as it even hints towards anything other than a perfect 90 degree angle, it will drop right off or slide. I've done some heavy magnet mods (like Omega Supreme's forearms use 4 sets each) but you can't pick OS up by his arm.

[IceWilly]

That makes me sad, I had visions of recessing magnets into the bots and painting over them for a stealth joining mechanism. Dashed are my dreams. But at least I found that out before cutting up my robots. :)

[Bern]

That makes me sad, I had visions of recessing magnets into the bots and painting over them for a stealth joining mechanism. Dashed are my dreams. But at least I found that out before cutting up my robots. :)

Well don't give up on it completely. Use the magnets as a supplemental connection to ratchet-type or Bionicle or whatever it is you're using, the extra nudge of the magnets will help hold the weight beyond what the plastic connectors will do.

[- Z -]

Well don't give up on it completely. Use the magnets as a supplemental connection to ratchet-type or Bionicle or whatever it is you're using, the extra nudge of the magnets will help hold the weight beyond what the plastic connectors will do.

LOL! Pretty much what I just said 4 posts above yours:


Agree 100%, however have you ever thought of lining a ratchet joint with those teeny tiny magnets. I have a larger one on the works that is SUPER strong but is still able to ratchet. I also have a ratchet joint that has magnets inside for the overall stability. One in the socket and the other in the pin....

[BigHank]

I have a project where I am intending to try electromagnets, will provide info as the experimentaion continues.

EMs are WAY stronger than regular magnets, with the trade off being of course the much larger (comparatively speaking) size and the need for batteries. The main benefit (and the reason I'm going this route) is the ability to be able to reverse polarity (making them repel) by reversing the voltage current with a IC chip.

Ooohh, the possibilities!:D

[Bern]

I have a project where I am intending to try electromagnets, will provide info as the experimentaion continues.

EMs are WAY stronger than regular magnets, with the trade off being of course the much larger (comparatively speaking) size and the need for batteries. The main benefit (and the reason I'm going this route) is the ability to be able to reverse polarity (making them repel) by reversing the voltage current with a IC chip.

Ooohh, the possibilities!:D

:eek:

"Constructicons, merge for the kill!"

[- Z -]

I have a project where I am intending to try electromagnets, will provide info as the experimentaion continues.

EMs are WAY stronger than regular magnets, with the trade off being of course the much larger (comparatively speaking) size and the need for batteries. The main benefit (and the reason I'm going this route) is the ability to be able to reverse polarity (making them repel) by reversing the voltage current with a IC chip.

Ooohh, the possibilities!:D!

You are crazy

[BigHank]

:eek:

"Constructicons, merge for the kill!"

Nope! But great idea!


!

You are crazy

That I am!

Don't think merge, think.......unmerge LOL!

[Johnny E]

I get them at http://www.kjmagnetics.com/
Their grade is from N42 till N52, which is really strong and they sell all sizes and shapes.
I used them here, 7 magnets, LOL:
http://i481.photobucket.com/albums/rr178/johaneggink/DSCF1767.jpg
http://i481.photobucket.com/albums/rr178/johaneggink/DSCF1768.jpg
http://i481.photobucket.com/albums/rr178/johaneggink/DSCF1764.jpg
The drumholder is metal, but the small magnet can still hold the weight.

Waduyamean? partsformer? LOL

[mrcharlievo]

Nice Johnny!

[Bern]

LOL! Pretty much what I just said 4 posts above yours:

Sweet if you have any pics of that they would be awesome to see if available :D

[CankleBreaker]

I get them at http://www.kjmagnetics.com/
Their grade is from N42 till N52, which is really strong and they sell all sizes and shapes.
I used them here, 7 magnets, LOL:
http://i481.photobucket.com/albums/rr178/johaneggink/DSCF1767.jpg
http://i481.photobucket.com/albums/rr178/johaneggink/DSCF1768.jpg
http://i481.photobucket.com/albums/rr178/johaneggink/DSCF1764.jpg
The drumholder is metal, but the small magnet can still hold the weight.

Waduyamean? partsformer? LOL

Which magnets did you use specifically? Plus I only count about 5 in the pictures, actually 4 :P

[frenzyrumble]

http://www.gaussboys.com/magnets/discs/

best source for magnets.

The 2 I most commonly use:


http://www.gaussboys.com/files/images/thumbs/D0301.jpg (http://www.gaussboys.com/ndfeb-magnets/D0301.html) See details (http://www.gaussboys.com/ndfeb-magnets/D0301.html) 3mm x 1.5mm N38 Nickel Plated Neodymium Magnet - Disc (http://www.gaussboys.com/ndfeb-magnets/D0301.html)
Model: D0301
Our price: $0.06

http://www.gaussboys.com/files/images/thumbs/D0601.jpg (http://www.gaussboys.com/ndfeb-magnets/D0601.html) See details (http://www.gaussboys.com/ndfeb-magnets/D0601.html) 6mm x 1mm N38 Nickel Plated Neodymium Magnet - Disc (http://www.gaussboys.com/ndfeb-magnets/D0601.html)
Model: D0601
Our price: $0.07

[Johnny E]

Which magnets did you use specifically? Plus I only count about 5 in the pictures, actually 4 :P
hips 2 (cilinders)
Neck (cilinder and square)
Arm-elbows 2 (cilinder)
Plate on truck 1 (plate)
= 7
:)

[CankleBreaker]

Thank you sir, I wasn't sure if the plate one was a magnet or just a metal piece like the one I have on my name badge. :P

[CankleBreaker]

Anyone have a rough estimate of how many magnets are required for a MP Devastator?