Looking for some sort of insulating film.

[Rob Flinn]

I'm just racking 8 modules up which have an exposed pcb bottom next to an aluminium panel on the next module. they don't touch but are perilously close. I'm looking for some sort of insulating film to keep them apart (preferably available in the UK).

I had thought about the paper/card sheet that is fitted in old Neve modules. Or sheets of Kapton tape, but that starts getting quite expensive

Any suggestions ?

 

[Jeff Goodman2]

Google 'fish paper'

 

[Rob Flinn]

Google 'fish paper'

Thanks Jeff. Seems difficult to get hold of in the size I need. I'll maybe have to use 2 strips.

 

[JohnRoberts]

+1 for fish paper... component leads can punch through mylar or plastic.

JR

 

[Newmarket]

What area is involved and what size of clearance (or what is the max thickness of insulator you can use) ?

 

[Jeff Goodman2]

It comes in many sizes, both precut and in rolls. You should be able to find some that suits your needs..

 

[Tubetec]

Adhesive backed polycarbonate film might be a possible alternative . Fish paper is available off ebay.co.uk

 

[Jeff Goodman2]

Maybe Radio Spares has some

 

[Youngwhisk]

There is a clear adhesive film used to protect auto headlights from rocks that may suit your needs. You can find it at auto supply stores. That may be the same polycarbonate film that Tubetec mentioned above.

 

[john12ax7]

Electrical tape would be a cheap low tech solution.

Transformer manufacturers will often supply a white film to put under the transformer to prevent things shorting out. Maybe could find out what that is?

 

[Rob Flinn]

What area is involved and what size of clearance (or what is the max thickness of insulator you can use) ?

Each panel is maybe 7" by 5". I could probably do up to 3mm max.

 

[Rob Flinn]

Adhesive backed polycarbonate film might be a possible alternative . Fish paper is available off ebay.co.uk

ebay.co.uk doesn't have fish paper in the dimensions I need, would probably have to do 2 or 3 strips.

 

[Tubetec]

Lay down a few strips side by side ,who gives a diddley dang .

 

[CJ]

what about some album cardboard from your least favorite LP's or maybe a trip to the used record store?

there is a shop in town that puts a box of junk LP's outside their front door every night, toss the album and use the cardboard, thick enuff so the sharp points will not punch through,

30mil Nomex 410 woulld be the best but mucho $$$. good to 30 KV in that thickness, fireproof, and resistant to sharp edges,

poly insulation for transformer winding would also be good,

 

[Jeff Goodman2]

https://reverb.com/item/2997294-insulation-gc-electronics-fibroid-fish-paper
I would think you can find this or similar somewhere that would deliver to the UK.

 

[Newmarket]

Each panel is maybe 7" by 5". I could probably do up to 3mm max.

Okay. So that seems a reasonably large gap to me. And what voltages are we talking about ?

 

[Rob Flinn]

Okay. So that seems a reasonably large gap to me. And what voltages are we talking about ?

It's just op amp based stuff. +&- 16v & +48v

 

[Rob Flinn]

https://reverb.com/item/2997294-insulation-gc-electronics-fibroid-fish-paper
I would think you can find this or similar somewhere that would deliver to the UK.

Not that I can find at anything like that price unfortunately.

 

[mjrippe]

Hi Rob, Dunno about the UK but in the USA 5"x7" is a standard size index card. For low voltages they should work fine. Double up if needed. -Mike

 

[Rob Flinn]

Thanks for the help guys, I kind of know what I need to do the job, it's just finding it at a cost effective price in the U.K. So far the polycarbonate film is the only thing that seems affordable.