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Old 27th June 2013, 04:44 PM   #781
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Quote:
Originally Posted by Legis View Post
Is elvamide real PITA to dissolve into ethanol, am I doing something wrong?


I bought the Elvamide from here: Electrostatic Speaker Conductive Coating Elvamide 120g | eBay
That stuff is crap and I doubt it is Elvamide at all. I bought the exact same stuff. I made an electric motor stir device and did mine for 4 hours and zero of it dissolved

I should add though, the seller is first rate and refunded me the cost.
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Last edited by audioquestM-40; 27th June 2013 at 04:46 PM.
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Old 28th June 2013, 09:06 AM   #782
SM7UYJ is offline SM7UYJ  Sweden
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I have bought from the same seller and after that got samples directly from DuPont - have had no trouble to dissole the stuff!
Follow the instructions and heat is very important-takes a while but dissolves perfectly!
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Old 28th June 2013, 12:20 PM   #783
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The stuff I got was NFG. I followed the instructions for solvent and heat with automated stirring and after 4 hours no change.
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Old 29th June 2013, 08:54 AM   #784
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Quote:
Originally Posted by audioquestM-40 View Post
The stuff I got was NFG. I followed the instructions for solvent and heat with automated stirring and after 4 hours no change.
DUH!!!????

Elvamide is filed under "thread bonding" on the official web site... Go to craftman's store and buy some. Below is posted picture for one of the brands. Look at the bottom right corner. What do you read? Right! "100% Polyamide". 3 micron layer on 1 sq meter contains 3 milliliters of nylon OR about 3 grams. This won't make you broke...
DO not wanna buy? Try to nag from the address on Dupont Canada web site
And Read This Fine Manual about the solvents: http://www2.dupont.com/Plastics/en_U...ng/302061a.pdf
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Last edited by alexberg; 29th June 2013 at 08:57 AM. Reason: RTFM
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Old 29th June 2013, 10:05 AM   #785
Legis is offline Legis  Finland
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Quote:
Originally Posted by audioquestM-40 View Post
That stuff is crap and I doubt it is Elvamide at all. I bought the exact same stuff. I made an electric motor stir device and did mine for 4 hours and zero of it dissolved

I should add though, the seller is first rate and refunded me the cost.
I have come to the same conclusion, the patch I got from that ebay seller is not real Elvamide. Luckily I managed to get 1kg sample of Elvamide from Dupont.
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Old 29th June 2013, 10:21 AM   #786
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You can't go wrong with Licron Crystal. I thought it was unobtainium in Canada, but maybe not:

https://shop.eis-inc.com/sap(bD1lbiZ...od_nbr=1756-8S

EIS - Canada
6 Melanie Dr., Brampton, Ontario, L6T 4K9
Tel: 800-538-1578 | Toll-Free: 800-538-1578
Canada

Last edited by CharlieM; 29th June 2013 at 10:24 AM.
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Old 29th June 2013, 01:51 PM   #787
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Quote:
Originally Posted by alexberg View Post
DUH!!!????

Elvamide is filed under "thread bonding" on the official web site... Go to craftman's store and buy some. Below is posted picture for one of the brands. Look at the bottom right corner. What do you read? Right! "100% Polyamide". 3 micron layer on 1 sq meter contains 3 milliliters of nylon OR about 3 grams. This won't make you broke...
DO not wanna buy? Try to nag from the address on Dupont Canada web site
And Read This Fine Manual about the solvents: http://www2.dupont.com/Plastics/en_U...ng/302061a.pdf
I emailed Dupont, we went back and forth a few times. They said they'd try to send some, never did. I've read through the Dupont site and it's material specs but I don't hang out in the fabric and sewing isle much, so I've never seen this thread bonding material pic you've attached but I'll have a look sometime.
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Old 30th June 2013, 04:54 AM   #788
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Licron Spray 1756S is available in Canada, I picked mine up for 38 a can from Acklands, heard they raised the price though, will check out tuesday and find out the reason why. Al
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Old 30th June 2013, 03:59 PM   #789
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Yes, I got some last week thanks for that tip a while ago. It's $51 with shipping.
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Old 29th January 2014, 03:52 AM   #790
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Default back to basics

Getting back to basics.
In applying the coating. If using spray on licron, you only want the center part of the membrane coated with licron, with a small tab for connection to the bias supply wire.

And need to avoid getting the licron near the (or on the spacers). What do you use to mask off the area of the membrane that you don't want treated?
Thanks,
Paul
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