frag racks

[mfinn]

I did switch back to polyester casting resin.
I have a couple that are now 1-1/2 years old and no problems.

 

[lunarlanderboy]

Hey mfinn thanks for the plans - I'm trying to imitate what you did and I'm wondering what those white circle like things that look like plaster are which are inside the mold?

 

[mfinn]

Hey mfinn thanks for the plans - I'm trying to imitate what you did and I'm wondering what those white circle like things that look like plaster are which are inside the mold?

Those are the 1" x 3/8" neodymium magnets. They are chrome colored and in that picture, the light reflects off them giving them a white color.

 

[lunarlanderboy]

ahhhh! ha ha it looked like styro-foam or plaster to me. Thanks!

 

[r2odie]

I did switch back to polyester casting resin.
I have a couple that are now 1-1/2 years old and no problems.

mfinn, any updates as to how the casting resin has lasted? thanks.

 

[lunarlanderboy]

been using them for 2 years with no perceivable difference- I think they would last forever- the stuff seems totally inert in water.

 

[returnofsid]

I actually picked up a couple of these, from Martin (Mfinn) several year ago, probably 4 years... while visiting him. They've been in a tank since and are working wonderfully!

 

[mfinn]

Haven't thought about this thread in a while. lol
4+ years and still doing fine.

I think it's safe to say that the polyester resin will last a long time in saltwater.

 

[r2odie]

Thanks all, just what I was hoping to hear!

 

[mfinn]

Thanks all, just what I was hoping to hear!

Are you going to try using polyester resin to make something?

I believe using a dye in the resin helps.

 

[r2odie]

yes I am wanting to make some frag mags for my 240. any special dye I should use?

 

[mfinn]

just dye for polyester resin.

 

[mykol reef]

look really nice.:thumbsup:

 

[Stephen73ta]

With a holding power of 35 lbs each I think you will be alright! Looks good

 

[mfinn]

I noticed most of the pictures were deleted here and from my imageshack account.

 

[mfinn]

I couldn't find the pictures I had that showed how to make these. If anyone wants to try I can pm them detailed instructions.

 

[Gorgok]

I recently made a rack out of sheet acrylic. I drilled through holes in a piece thicker than my magnets, then glued 2 thin sheets onto that piece (second piece after inserting magnets). That magnet block then to my rack. Worked out great i think, i kept it all clear so i can see my shiny magnets too. I'll try to get some pictures of it if i can.

 

[mfinn]

I recently made a rack out of sheet acrylic. I drilled through holes in a piece thicker than my magnets, then glued 2 thin sheets onto that piece (second piece after inserting magnets). That magnet block then to my rack. Worked out great i think, i kept it all clear so i can see my shiny magnets too. I'll try to get some pictures of it if i can.

You should start a thread about them.

 

[r2odie]

I couldn't find the pictures I had that showed how to make these. If anyone wants to try I can pm them detailed instructions.

Are these the 1" x 3/8" neodymium magnets? Any idea if they would be strong enough for frags on back wall of 240?

 

[mfinn]

When I made my frag racks, I used the 1" x 3/8" neodymium magnets on the inside ( encased in polyester resin ) and 1" x 1/4" epoxy coated neodymium magnets on the outside.
2 sets of these magnets spread across a 12" wide frag rack had enough holding power through 1/2" thick glass, to hold several pounds.
So one set for a single frag, my guess would be more than enough.