Some questions about using Envirotex Lite on a pedal

[matmosphere]

That's awesome looking!! Excellent job

[jimilee]

Nicely executed.


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[Philtre]

Thanks guys.

I think the hardest part of the process has been trying to find plastic mixing cups with measured marks on them. I ordered some from eBay but they were massive (and flimsy) and went straight in the bin. Still haven't managed to locate any.

[Adam_DIY]

Looks good Phil.  I buy plastic cups from wilko or B&M they both have cups with lines on them.  I pick up paper plates there too and pour on those so I don't make a mess of my desk.

[Philtre]

Looks good Phil.  I buy plastic cups from wilko or B&M they both have cups with lines on them.  I pick up paper plates there too and pour on those so I don't make a mess of my desk.

Ah, good tip!

And big thanks to everyone who advised on this, and made it a success! Special shout out to Adam_MD who has offered invaluable advice all along the way here, and on the Fretboard forum. 

[m-Kresol]

Thanks guys.

I think the hardest part of the process has been trying to find plastic mixing cups with measured marks on them. I ordered some from eBay but they were massive (and flimsy) and went straight in the bin. Still haven't managed to locate any.

I use syringes for measuring. They are cheap, readily available (I assume, I just grab a few from the lab and reuse them) and allow for reliable measuring. Mixing can then be performed in any container you like, such as a used yoghurt cup.

[Philtre]

Did another pour today. It went well, and I used half the quantity I did last time.

One thing though - I kept an eye on it to make sure no bubbles appeared. Then, after 5 hours, just when the ET was hardening, two quite large bubbles appeared out of nowhere. I gave them a little heat blast with the lighter, which burst the bubbles but now I have two dimples. Strange that bubbles could appear after 5 hours. 

Edit - and then, mysteriously, after 6 hours, another bubble appeared and the ET set hard, encasing it forever.

[bcalla]

I use cups like these - they're basically disposable drinking cups.

I don't think I ever had bubbles appear so long after a pour.

[matmosphere]

Leftover plastic syringes forms children's Tylenol works out well. Pharmacist have them too.

[Philtre]

Update - forget all these plastic cups for measuring Envirotex...

I tried the pouring into two different plastic cups and then into a third cup method and then realised that, with these small amounts of Envirotex,  you lose an unknown amount just pouring from one cup to another. So I bought some cheap plastic spoons and measure out by that into one container. Works great!

[Philtre]

Update - forget all these plastic cups for measuring Envirotex...

I tried the pouring into two different plastic cups and then into a third cup method and then realised that, with these small amounts of Envirotex,  you lose an unknown amount just pouring from one cup to another. So I bought some cheap plastic spoons and measure out by that into one container. Works great!

Bugger.

The pour is still tacky after 24 hours. I think it's because I mixed a small quantity of ET and this means more error in measuring out the proportions of resin and hardener.

Anyone know how to remove ET from an enclosure?

[m-Kresol]

if it's at least partly hardened you can scrape/ripp it off. Get underneath it with a knife and lift it up. this will ruin your graphics (decal) and spraypaint underneath, but I don't know of a better method that would leave the underlying material intact.

[pickdropper]

Thanks guys.

I think the hardest part of the process has been trying to find plastic mixing cups with measured marks on them. I ordered some from eBay but they were massive (and flimsy) and went straight in the bin. Still haven't managed to locate any.

I use syringes for measuring. They are cheap, readily available (I assume, I just grab a few from the lab and reuse them) and allow for reliable measuring. Mixing can then be performed in any container you like, such as a used yoghurt cup.

I use 10cc syringes for measuring as well.  It's just easier that way.  Mix ratio is important with epoxy, although Envirotex is a bit less sensitive than others I've used.

My process is a bit different:

1.) Drill the holes in the enclosure first. 

2.) Put tape behind the holes before I pour the epoxy so that the top levels and doesn't drip through.
 
3.) When it's dry to the touch, I peel off the tape from the back and cut out the holes with an exacto knife: no drilling necessary once the epoxy has cured.  I usually cut it the next day as it is dry enough, but not super hard yet.  Make sure to cut top down so that it doesn't pull up the epoxy.