Thermal epoxy for flat platen

N

Natlek

Joined
Jun 9, 2015
Messages
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On first picture is my worn ceramic platen glued with double tape .As you can see tape was heavy burned from heat because tape is insulator .Pure epoxy has low thermal conductivity .Real one thermal epoxy are very expensive .Close is JB weld for what i need but it is mix with iron dust as far i know . So what if i mix cooper or silver fine dust with epoxy ? What do you think , it can be only better ?Maybe there are other better solution for this ?
I have mounted aluminium heat sink on back side of flat platen and i will use this thin tungsten carbide plate .It is very thin / 1.2mm/ so it is good if i have faster heat transfer from TC to platen and cooler ..............I grind on very high speed and lot of pressure so there are very high heat on platen .I hope TC will lower heat little because it has low friction characteristics but ....
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I attached my ceramic to my home-made water-cooled platen with JB weld that found the thermal transfer to be more than sufficient. I'm just running a cheap submersible aquarium pump in a 5 gallon bucket and the platen never gets even warm to the touch. I love it as a solution. It only took maybe an hour or two in front of a mill to make and I don't want to go back to not having one!
 
Maybe use thermal conductive paste (like the stuff you use between CPU and heatsink) in-between strips of double sided tape?
 
A.McPherson said:
Maybe use thermal conductive paste (like the stuff you use between CPU and heatsink) in-between strips of double sided tape?
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That is interesting idea :thumbsup: There are thermally conductive adhesive tape but i can t find quality one here . On aliexpress there are million but who knows what quality they are ...
I found this /long video/ about making thermal epoxy ...maybe i should try something with silver and carbon .... or if i can find dendritic cooper here .
Some test which show how good are aliexpress tape :)
 
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Ok .............here's what I did .I used Araldite which can withstand higher temperatures (204°C).At least that was told to me from where I get it/composite factory/.I apply thin layer glue on both part and sprinkled ? them over with powder mix of silver and cooper and left gravity to do its part .Then I put them together with little pressure and now it is in oven on 70 Celsius .The reason I don t mix all together is because it will become to thick to apply evenly on surface ,this way I THINK that I got better result ...Anyway way better then pure epoxy :)What do you think ? If this tungsten plate last much longer / I hope/ then glass maybe i will braze it sometimes........:)
I forget........I do lot of deep scratches on both part.....with diamond segment from circular saw for granite ....I think that i will use that trick for tang preparation before gluing scale in future .Diamonds make deep thin scratches which i like more then from hand sanding tang
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This is my first belt grinder I make back in I think it was 2015 or 2016 , it doesn't matter .It is 32 m/s grinder .You can see that I used cooler behind plate .And it works , but never thought that I should use fan .I didn't grind that much then or enough hard so .............it was good enough for me then .

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Well guys , I think you should really , really watch this two video from Green Beetle ...................For me , water cooling platen is my next project .


 
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