The ceramic coated Coil

[Jason_brent]

I looked at the aremco web site and saw the Pyro-paint and then i went looking around and they also have Aremco-Bond™ 805
Thermally Conductive, Aluminum-Filled, Two-Part Epoxy to 570 °F. Electrically and Thermally Conductive Materials | Aremco Products, Inc. I was wondering if this might work better. considering its thermally conductive

I just e-mailed the company asking for a sample of the pyro-paint to test it out will keep yall updated if they send it or not

 

[Ulmer]

If your choice is the ceramics from Aremco, you have to use Pyro-Paint 634-AL High Temp Refractory Coating or Cerama-Dip 538N. Other ceramics like Aremco-Bond 805 Thermally Conductive, Aluminum-Filled, and especially all Epoxy-based ceramics are not suitable.

 

[Sovran]

@ Ulmer thanks for the answer and the links. I also had a hard time finding anything. I normally dont have short issues when I coil but dislike the heatup time for 28 guage kanthal. this might be the answer to faster heatup using a smaller gauge and still supply the heating surface area I am looking for. I also would love a vid if you can post one.

 

[Ulmer]

My atty (genisis LV) has top feed, so that unfortunately, I can't show a video in action.

 

[JPoodles]

I agree with Ulmer- you should stick with the pyro-paint (95% alumina). It is the safest of their products from the little research I've done. Alumina IS thermally conductive so there is no sense in using the epoxy for that reason.

Its common to associate ceramic with heat insulation though. It insulates due to its conductivity. It disperses the heat through unbound fibers or pores.

side note- I think zirconia is thermally resistant , i dont know why, but thats not what we want here.

For our use in this application the particles of alumina, in pyro-paint, are bound tightly to provide a good thermal bridge. Mica works much the same way and its used as an electrical insulator and thermal conductor in micro tubing band heaters for plastic mold injection. Its cost is too high for our frugal needs. I like the pyro-paint because its affordable and there is little silica in the composition compared to other ceramic coatings.

I saw someone mention their interest in alumina tubing. I used this in place of the pyrex and FQ for the Scuba Q. PM me if you are still interested in hearing my findings.

 

[TomCatt]

To be specific the carcinogen is CRYSTALLINE SILICA according to the MSDS.

Look up the MSDS for sand; you'll be surprised

 

[Jason_brent]

So this is what i got back from them

"Thank you for the interesting application. For your review, attached is Technical Bulletin A05-S1 that describes our line of High Temperature Electrical Coatings & Sealants. I recommend that you evaluate Cerama-Dip 538-N and Ceramacoat 512-N. Typically the minimum order quantity for either material is 1 pint @ $ 93.00/pint but since you do not require 16oz for evaluation purposes, I can offer a 4oz container @ $ 40.00 Each. If you want to test both materials, I will reduce the price to 2pcs (4oz) @ $ 30.00 Each. Stock items. Visa or MasterCard accepted. Prices are FOB Valley Cottage, NY."

any one want to give it a try i will send you the contact info. my pockets are really shallow right now

 

[Ulmer]

A single coil requires a small part of microgram of ceramic. 4oz would be enough for all the vaper community for many years!

 

[burnie71]

Take a look here:
VHT Exhaust Flameproof Paint Flat White Primer High Temp SP118 SP 118 | eBay
Amazon.com: Duplicolor High Temp Exhaust Flameproof Paint, VHT Flat White Primer, Pt# SP118, sp 118: Everything Else
High Temperature Coatings

Interested Aussies look here Speco Thomas — Where to Buy Our Products

 

[Action_Jackson]

We have several 50 pound bags of Titanium dioxide left over from a test we did where I work. Can this be mixed with water or something to create a paste?

I need to go over to the furnace department at work, they have 5 gallon buckets of white refractory paint and also refractory mortar.

 

[Ulmer]

We have several 50 pound bags of Titanium dioxide left over from a test we did where I work. Can this be mixed with water or something to create a paste?

I need to go over to the furnace department at work, they have 5 gallon buckets of white refractory paint and also refractory mortar.

Keep in mind that VHT Coating is a very fine dispersion of titanium dioxide in an organic solvent. This provides a high adhesion to the metal surface.

 

[Action_Jackson]

Keep in mind that VHT Coating is a very fine dispersion of titanium dioxide in an organic solvent. This provides a high adhesion to the metal surface.

That makes sense. I am going to get a small sample of the refractory paint we have and check the MSDS on it.

 

[silverbullit]

To anyone wanting to try this method. In my opinion-DON'T.
Yes-the coil is fairly easy to coat.
Yes-using the Peter-K method for installing an unoxidized wick is also easy,
Yes to wicking, especially using 500 mesh, no hot spots.
No to being the perfect vape. The volume of vaper and the flavor is muted. Does not allow for even a great juice to be even a little good.
even tried to go through a tank full, same thing. Tried 32ga., 30ga., and ribbon wire. Final results. Waste of time and money.
Just lightly oxidize a pre-rolled 500 mesh wick, use your favorite wire, fill up and vape the crap out of it and enjoy.

 

[Ulmer]

It is difficult to understand how the ultrathin ceramic coating of coil can affect the volume of vaper and the flavor...

 

[bkanivets]

Ulmer, where you able to try the Pyro-Paint 634-AL? I'm thinking about buying a can. It looks like the safest option now.

Also here are the MSDS for Sauereisen ELECTRIC RESISTOR CEMENT NO. 78 (Scottinboca posted reference before) - looks similar to VHT

 

[Skepticide]

Nice thread, this definitely brings some of the usefulness of alumina to applications that can't accommodate a porous ceramic wick.

Just a left-field idea, how about using kanthal ribbon and coating the outside with a thermal insulator and then sealing the whole thing in with ceramic? This way you are steering the heat toward the surface area facing the juice flow. Might be pointless, but its just a thought.