Worn surface on heated bed exposing copper traces -- how to insulate?  

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

I was going to suggest a lacquer.  For a small spot then something as simple as nail varnish would work but for a larger area and to keep the bed even then you can get spray on lacquers.  Would need to check the max temps of which ever one you go for naturally and I'd remove the bed for the application unless you do a good job masking off the rest of the printer.  Would ruin your rods if some got one there.

There are loads available and all should insulate the traces.

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

I would use something like that: https://www.amazon.com/Scratch-Remover-Painting-Chevrolet-Hyundai/dp/B07GVMB5LD/ref=sr_1_25?keywords=auto+metal+paint+repair&qid=1573579069&sr=8-25

If you will get a small bulge, go with fine sandpaper.

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

The coating is generally an epoxy barrier, aka solder resist.  You can buy it in small amounts for home use.  It is usually applied via silk screen. And you can do the same.  Some is UV cured.

ps: a high temp engine paint might work, flat black or even hot rod silver. lol.

https://www.globalindustrial.com/p/janitorial-maintenance/paint/aerosol/vht-extreme-high-temperature-coating-clear-satin-finish-11-oz-aerosol?infoParam.campaignId=T9F&gclid=EAIaIQobChMIt8SV-6bl5QIVxRd9Ch2BjwpQEAQYAyABEgLM-fD_BwE

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

What do you think about Kaptonband? - Carsten

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

I would start with a small strip of kapton tape.  According to Google, the 2.7 mil thickness is just under 70 microns.  Maybe a small nylock adjustment would compensate, or even the 7x7 grid.

Do let me know, as I've got about a 1.5mm wedge where I see copper.  😀 

Nothing major just yet, but...

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

If I may ask - how did you wear the surface of your heated bed?

I put the steel print sheet against the pins and lower it. There is never any sliding on the bed.

I was sort of expecting the heated bed to last until the heater elements burned out...

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

Posted by: @robert-rmm200

If I may ask - how did you wear the surface of your heated bed?

Probably using some sheets that aren't coated at the ends. I've put blue painter's tape over those. I probably let it slide a bit as I lift the sheet more than anything, partly due to the low table I had it on for the 1st 18 months.

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

I was wondering if deburring sheets was a good idea, and it seems you've proven it is.

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

Posted by: @tim-m30

I was wondering if deburring sheets was a good idea, and it seems you've proven it is.

No doubt. I deburred some of the sheets, but likely missed a couple. After I patch it up, I'll sit down and run through them all.

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

It looks like a slightly cheaper product good to 650C might be:

http://www.deco-color.com/products_en/high_temperature.html

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

Posted by: @robert-rmm200

It looks like a slightly cheaper product good to 650C might be:

http://www.deco-color.com/products_en/high_temperature.html

Nice! I need to find a nice Prusa orange. Thanks everyone!

RE: Worn surface on heated bed exposing copper traces -- how to insulate?

V6