Full Version: Can you use............
From: Puck (PUCKERBRUSH) [#7]
28 Apr 2006
To: LipChip [#4] 2 May 2006
LipChip,
Yah, thats 2 inch x 1/2 inch. Don't think I could even start to dome a 2 foot piece with the luck I'm having on this little piece!
Puck
From: Ken D. (KDEVORY) [#8]
28 Apr 2006
To: Puck (PUCKERBRUSH) [#6] 28 Apr 2006
Try wiping the aluminum with something to clean it first. It may have some kind of coating on it.
I've played around with doming some pictures printed on photo paper using my inkjet. Some papers have UV inhibitors that will leach into the UV epoxy forming a super thin layer that will not cure. I also needed to heat them after printing to dry the ink. (again I suspect UV inhibitors.)
From: Stunt Engraver (DGL) [#9]
28 Apr 2006
To: Puck (PUCKERBRUSH) [#6] 28 Apr 2006
I haven't seen where the substrate makes a difference in how the epoxy cures, unless the aluminum is conducting heat and affecting the curing time in some way.
If you comb through the other epoxy doming threads, you'll see that some people are able to cure flexible epoxy, with little or zero "tacky" feel to the touch.
Is that what you're feeling, or is the epoxy still in a semi-liquid state, after exposure to UV?
From: Puck (PUCKERBRUSH) [#10]
28 Apr 2006
To: Ken D. (KDEVORY) [#8] 28 Apr 2006
Ken,
Thats what I thought so I wiped it down with acetone, alchol and lift off but it didn't change anything. So I'm thinking it's the flexible on the aluminum thats not working, rigid works fine.
Puck
From: Puck (PUCKERBRUSH) [#11]
28 Apr 2006
To: Stunt Engraver (DGL) [#9] 28 Apr 2006
Stunt Engraver,
I find it weird that this is the only thing so far that I can't get the flexible to cure all the way on.
When I take it out, anywhere from 20 minutes to several hours, it is set but still so tacky that when touched it leaves permanent finger prints, dulls it plus I can just peel it off with my finger with little to no effort. I can use a piece of sheet magnet and it cures all the way and no peeling it off, no tackyness or finger prints.
I'm thinking it has to be something in the flexible not working with the aluminum since I can do the same piece with rigid and it works just fine.
Guess I'll keep trying other products until I hit on something that works.
Thanks,
Puck
From: Stunt Engraver (DGL) [#12]
28 Apr 2006
To: Puck (PUCKERBRUSH) [#11] 28 Apr 2006
It's still relatively flexible and the aluminum should provide enough strength to retain the shape of your bend.
From: Harvey only (HARVEY-ONLY) [#13]
28 Apr 2006
To: ALL
Aluminum usually poisons acidic products. It is highly reactive compared to other metals. Aluminum compounds do not do nearly the same thing that their copper or iron equivalents can do. That being said, I never heard of that with epoxies.
On the subject of papers, the accuplot paper is no good for doming, it looks great at first then after a few days ends blotchy like regular paper. When disassembling the item, the dome did not set directly on the accuplot.
From: Puck (PUCKERBRUSH) [#14]
28 Apr 2006
To: Stunt Engraver (DGL) [#12] 28 Apr 2006
Stunt Engraver,
I did try the rigid and when I did the bend it popped off. I'm using the epoxy resin that is a one part UV cure, maybe I should try a different kind.
Puck
From: Puck (PUCKERBRUSH) [#15]
28 Apr 2006
To: Harvey only (HARVEY-ONLY) [#13] 28 Apr 2006
Harvey,
Haven't tried doming any paper yet but am going to try it on some sign vinyl next week, going to try and make some hubcap centers for the PT just for fun.
Puck
From: Harvey only (HARVEY-ONLY) [#16]
28 Apr 2006
To: Puck (PUCKERBRUSH) [#15] 29 Apr 2006
From: Stunt Engraver (DGL) [#17]
28 Apr 2006
To: Puck (PUCKERBRUSH) [#15] 29 Apr 2006
EDITED: 28 Apr 2006 by DGL
From: Stunt Engraver (DGL) [#18]
28 Apr 2006
To: Terry-Morris (TERRYMORRIS) Unread
This is a perplexing epoxy doming issue. What words of wisdom can you offer?
Thanks,
From: Terry-Morris [#19]
28 Apr 2006
To: Puck (PUCKERBRUSH) [#1] 29 Apr 2006
If you are using the 7156 epoxy, it does have a tacky feel when done.
You are not doing anything wrong. You can get rid of the tacky feeling with baby powder. This will dull the finish to a matt but it will get rid of the tack feel.
From: Terry-Morris [#20]
28 Apr 2006
To: Puck (PUCKERBRUSH) [#18] 29 Apr 2006
One other thought, depending on how much of a bend you need, the rigid epoxy is slightly flexible right after doming while it's a little warm. You might try bending it as soon as it's cured and hold it there while it cools.
While I have not tested this it might even be possible to warm up the domed item with a hair dryer and make if temporarily flexible.
From: Stunt Engraver (DGL) [#21]
28 Apr 2006
To: Terry-Morris [#20] 28 Apr 2006
Rigid epoxy is remaliable (is that a word?) upon heating. I once domed some 7" discs, which, after sitting overnight, the cool air in my garage made the epoxy contract, thereby, making the disc slightly curved.
I placed the disc on top of my (heated) swing-away heat press, which allowed me to reshape the disc.
Thank you for responding so quickly and helping to uphold our 911 reputation. :-)
BTW, thank you for placing your Ultradome II ad in the Ad/Buy/Sell folder. Very slick item.
Message 3662.22 was deleted
From: Rodney Gold (RODNEY_GOLD) [#23]
28 Apr 2006
To: Puck (PUCKERBRUSH) [#14] 29 Apr 2006
Message 3662.24 was deleted
From: Puck (PUCKERBRUSH) [#25]
29 Apr 2006
To: Terry-Morris [#19] 29 Apr 2006
Terry,
Thanks for the info. I am trying the 7156 epoxy for the flexible. Does there happen to be a different one that is better?
I'll try curving the rigid while it's still warm and see how it does.
I looked at your new Ultra Dome and while looking I saw one called the Storm (?), 8"x8" in size. If I ever get this to take off I'm thinking on getting that one to start with since the size is just right for what I'm doing at this time. Would be an easy one to take with me to swapmeets and craft fairs.
Puck
From: Puck (PUCKERBRUSH) [#26]
29 Apr 2006
To: Rodney Gold (RODNEY_GOLD) [#23] 29 Apr 2006
Rodney,
For outdoor use? Or for sign vinyl?
Puck