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Topic: The random RESIN question thread!  (Read 410551 times)
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« Reply #1660 on: June 30, 2011 03:10:26 AM »

I have some Gedeo resin plaster and it says on the packet it can be perfumed. Has anybody perfumed resin plaster ? What did you use and what ratio of perfume to plaster did you use?

Kind regards,

Sarah
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jonnamarco
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« Reply #1661 on: July 09, 2011 08:28:34 PM »

I mixed a batch of resin today and it never got hot. Does that mean I didn't mix it correctly and it will never cure? Thanks
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« Reply #1662 on: December 11, 2011 08:37:46 AM »

I bought some moulds from Joanns on cyber monday. I mixed up some resin last night and checked on it this morning. It looks like I might not have mixed in quite enough of the hardener as they are still really rubbery and not hard at all. I am going to let them cure longer but I hope I didn't just ruin the molds I just bought. I'd rather save them if I can.
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Diane B.
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« Reply #1663 on: December 11, 2011 08:50:02 AM »

Most resins don't cure for 24-48 hrs, and can even take longer if they're in an area that's too cool or too humid. 

You don't say the kind of resin you used or the brand though, and those things would make a big difference in whether the proportions were correct too.

P.S. If you're interested in a lot of info about resins in one place, check out this page at my site as well:
http://glassattic.com/polymer/other_materials.htm

HTH
« Last Edit: December 11, 2011 08:51:34 AM by Diane B. » THIS ROCKS   Logged

POLYMER CLAY "ENCYCLOPEDIA" 
http://glassattic.com/polymer/contents.htm
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http://s96.photobucket.com/albums/l163/DianeBB
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« Reply #1664 on: December 11, 2011 12:20:18 PM »

Thanks Diane I already have your site bookmarked! I'm going to go check up on things there. I am using Easy Cast that I got from Michaels. The first time I used it it cured fine over night but not this time. I still have them in the moulds since I can't get them out anyway and I don't want to ruin them. Maybe they will be set tomorrow.

Edit; after letting the resin sit another night, they are now fully hard and I was able to pop one out. I am leaving the rest in until I get home from work. I am so happy!
« Last Edit: December 12, 2011 09:04:29 AM by vampedangel14 » THIS ROCKS   Logged

cassiem
« Reply #1665 on: December 12, 2011 07:02:24 PM »

I went out today and bought my first bottles of resin.  I've got a few, maybe stupid, questions, though.

I got the Castin' Craft "EasyCast Clear Casting Epoxy" - it tells me to do even parts, which is comforting - I plan to use it to fill over pictures inside bezels.  Will that work?

It's a little intimidating - I bought this because the only other resin they had at Michael's (I had a coupon!) was a 1-bottle UV resin, and as it's winter, I wasn't sure it would cure well.  Would it have, or would I have needed to get a UV lamp or something like that?
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« Reply #1666 on: December 13, 2011 05:31:40 AM »

cassiem, I use the Castin' Craft resin and just made some up this weekend. They took an extra day to cure because it is cold in my room since there is only one vent in the hallway upstairs, but they did cure.

Here they are! To add color, I used embossing powder found in the scrapbooking isle. Green in one and the others have purple. There are also tiny seed beads in the pendents.

Resin bangle and pendents by Lucky XIII, on Flickr

The green square was the first attempt I did. I used a silicone brownie pan with it and the pieces came out cloudy and the part that was to the air remained sticky. I read this could happen with silicone moulds because they caused the resin to cool too quickly and so not cure properly. I have since coated the sticky side with Sculpey glaze which worked, and some I used something called Gloss Accents and that also cured smooth and shiny.

The pendants and bangle were done using actual resin moulds in a flexible plastic. They finished curing yesterday and popped right out. They are completely clear and the part that was to the air is also very clear and smooth not sticky at all. They are still a tad flexible so once they harden up more (assuming they will) I will trim off the excess resin that went above the top so the edges are even.

The Castin' Craft is pretty easy to use since you use equal parts of it. I wish they had the bigger bottles at Michaels since I have only used the stuff twice now and my bottles are already half gone!
« Last Edit: December 13, 2011 05:32:58 AM by vampedangel14 » THIS ROCKS   Logged

Diane B.
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« Reply #1667 on: December 13, 2011 10:06:25 AM »

Quote
. . .cassiem, I use the Castin' Craft resin and just made some up this weekend. . .The Castin' Craft is pretty easy to use since you use equal parts of it.

vampedangel14 ...it's probably best to refer to the Easy Cast product just as "Easy Cast" since the primary resin that the company called Castin' Craft has always made (and been famous for) is a polyester resin (Castin' Craft Clear Polyester Casting Resin) that's been nicknamed "Castin' Craft" over the years. 
Polyester resins are not mixed one to one, but a few drops of one to a lot of the other, and also are fiddlier to use and harder on lungs, etc, than epoxy resins. It's really easy to get mixed up between the types of resin, and a lot of people have used the wrong terms or not understood there were important differences--in fact maybe most people in the beginning unless they worked with more than one kind, and there have been many misunderstandings.

Quote
I wish they had the bigger bottles at Michaels since I have only used the stuff twice now and my bottles are already half gone!

Epoxy resins are more expensive by volume than polyester resins, but mostly they don't come a lot cheaper than what you'll see at Michaels --though slightly larger containers can be purchased in various places.

Quote
. . . The pendants and bangle were done using actual resin moulds in a flexible plastic. They finished curing yesterday and popped right out. They are completely clear and the part that was to the air is also very clear and smooth not sticky at all. They are still a tad flexible so once they harden up more (assuming they will). . .

The plastic molds you have that worked well are probably HDPE (High Density PolyEthylene plastic) and that's the primary material used to make the molds sold for resin (polypropylene works too, I think).
Flexible cloudy-plastic items like Rubbermaid and Tupperware containers, etc, are made from the same material and work well, but unless they're handled carefully (like never even wiping them to dry, etc) they can get teeny-teeny scratches which will make the surface of the mold microscopically ragged and create cloudy surfaces in the resin.
Silicone molds can have or get teenily-uneven surfaces too, and they can also create surface problems created by the fact that they're flexible though latex and rubber RTV mold materials are worse for that. 

As for the flexibility of the cast items, since you were using Easy Cast instead of a regular epoxy resin, the items could remain flexible where they're thin enough when in warm situations unfortunately.

Quote
. . . I got the Castin' Craft "EasyCast Clear Casting Epoxy" - it tells me to do even parts, which is comforting  . .

cassiem... Easy Cast is an epoxy resin but one that's been tweaked so that it can be used to make thicker items in deeper molds like the polyester resins can, but still be mixed one to one (and also be better for breathing/lungs like other epoxy resins are compared to polyesters). 
The disadvantages to Easy Cast though are that if it's exposed to even body heat after curing, its surface can become a little soft and any thin areas will become flexible. 
(The most common brand of regular epoxy resin is probably Envirotex Lite, and it should be available at most all craft and hobby stores, and often also in small hardware stores like Ace/etc.  Regular epoxy resins shouldn't be poured deeper than 1/4 -1/2" at a time though if you want the cast to be very clear.)

I'm not too familiar with the UV resins or the one-part resins, but I've heard the UV ones (usually 2-part though) can get bubbles and otherwise be more unpredictable than regular epoxies or polyesters, as well as being more expensive by volume.  There's some info on some of the one-part ones on the page at my site about resins (see link below) if you're interested though (...the one-parters have problems too, but it's what you're doing and the effect you're after that will decide which kind of resin will work best or even okay).

Quote
- I plan to use it to fill over pictures inside bezels.

As for using bezels, there you're pouring the resin in a very shallow area which is cell (not a mold) since you won't be removing it.  So regular epoxy resins will do fine since the resulting resin won't be thick, and epoxies are generally the ones used in those situations rather than polyesters**. 
Also, putting resins in cells is different from putting them in molds in that you won't be seeing the part of the cured resin that had contacted anything (and that area could end up cloudy if there were any micro-scratches, etc) since it won't be the "top" of the cast resin item, it will be the bottom of the fill. 

In fact for just doing the kind of thing you're talking about, you could even use clear fingernail polish for acrylic fingernails, or other things like clear gloss polyurethane, etc.  And some people use the "dimensional glues" but those are scratchable so usually a layer of polyurethane is needed over them unless they're well down in the bezel so protected somewhat by the walls.

Some "pictures" will need to be sealed before pouring resin over and there are some other tricks about doing that kind of thing in bezels and other "cells," so you might want to check out that this page at my site on resins and click on the sub-category called In Permanent Cells--Bottlecaps, Etc for those tips.
http://glassattic.com/polymer/other_materials.htm

**Polyester resins won't fully-cure well on any surface that's in contact with air during curing--it's supposed to be that way so that surface can stick to more layers of fiberglass cloth, etc, that might be added.  There are some workarounds for that though (check the link just above for that, and look under the category on Polyester Resins).
Epoxies will cure fully in areas that are in contact with air.




« Last Edit: December 13, 2011 10:38:30 AM by Diane B. » THIS ROCKS   Logged

POLYMER CLAY "ENCYCLOPEDIA" 
http://glassattic.com/polymer/contents.htm
few of my photos
http://s96.photobucket.com/albums/l163/DianeBB
(had to move them from YahooPhotos, so many now without captions)
tickled_sidhe
« Reply #1668 on: January 03, 2012 02:29:50 PM »

I'm on board. I have bought easy cast from Micheals, I have a few moulds and I'm waiting for a day when my 3 year old is not around to go on my maiden resin voyage.

question though, everything I read has big TOXIC warnings... "do this outside, wear a mask" and so on. So, how toxic is it? I obviously am not going to do this with my child around and it just dumped 50 cms of snow on our heads so i'm not heading outside...

what do you do? advice? big warnings of "TURN BACK NOW"Huh
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vampedangel14
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« Reply #1669 on: January 04, 2012 06:35:42 AM »

I did mine inside with no problem. If you have a mask you should wear it and you definitely want to wear gloves. Make sure your work area is covered with newspapers or something to protect the surface. If you spill anything you want to clean it up before it hardens or it will remain there! I have a silicone sheet I use when I do stuff with clay so I did the resin stuff over that since any resin I spill and miss will just pop right off.
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