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rparigoris
Joined: 24 Nov 2009
Posts: 785
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 Posted: Tue Jun 11, 2024 8:27 am Post subject: Expancel |
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Hi Group
Does anyone have any experience using Expancel from Aircraft Spruce?
I ran out of Expancel from Europa but bought some from Aircraft Spruce years ago. I don't think they sell it anymore. The Aircraft Spruce stuff seems fluffier and more Talc like.
Thx.
Ron Parigopris
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DuaneFamly
Joined: 16 Jan 2022
Posts: 21
Location: Chandler, AZ
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| Posted: Tue Jun 11, 2024 10:20 am Post subject: Expancel |
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Is Q cell the same as Expancell? That’s what I used and have. Glass beads that’s like talcum powder. Mix with Aeropoxy as a light weight filler. Can go from creamy to fluffy Deprino how much you add to the Aeropoxy.
Mike Duane N377EA
Chandler, AZ
Sent from the all new AOL app for iOS
On Tuesday, June 11, 2024, 09:28, rparigoris <rparigor(at)hotmail.com> wrote:
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Mike Duane |
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rparigoris
Joined: 24 Nov 2009
Posts: 785
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| Posted: Tue Jun 11, 2024 2:41 pm Post subject: Re: Expancel |
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Hi Mike
Expancel is plastic micro balloons and Q-Cel is glass micro balloons. Expancel is easier on the lungs and sands easier especially if you mix it dry enough. With Expancel I start with a thin coating of resin, then wait till it gets really tacky, then apply Expancel that is so dry that it wouldn't stick to a dry surface. It's just amazing how much more you can add to get to this point. Then when applying, a heat gun helps things along, I like using spackle tools. I also like to heat tools as well as Expancel. Best to get it done in 1 shot, so overfilling even 3/16" or 1/4"too much is better than having to add more fill. This mixture sands like dense balsa wood. Really goes away quick with 80 grit. Put breeze to your back and neighbors car downwind (make sure your car isn't downwind!). If you are low in some areas, if still partial sticky, add some more. When it cures for a few hours, you can razor trim a bit too. Once cured, if a lot more is needed in areas, bite bullet, wet, wait till real tacky and refill. Then you will need to deal with the hard resin layer when sanding and the not too dense Expancel. Ifonly tiny inperfectionsand slight lowareas, I like 3M Flowable putty. For deeper areas, but not worth it to refill with Resin and Expancel, I like lightweight Rage. Really dry Expancel is a really light weight fill. Ron P.
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DuaneFamly
Joined: 16 Jan 2022
Posts: 21
Location: Chandler, AZ
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| Posted: Wed Jun 12, 2024 8:43 am Post subject: Expancel |
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Thanks Ron. Good explanation of the differences and handling. Luckily, when I was at the stage, I had greenbelt area going downhill usually with the prevailing breeze. But I still always wore a good mask.
Mike Duane N377EA
Chandler, AZ
Sent from the all new AOL app for iOS
On Tuesday, June 11, 2024, 15:41, rparigoris <rparigor(at)hotmail.com> wrote: | Quote: | --> Europa-List message posted by: "rparigoris" <rparigor(at)hotmail.com (rparigor(at)hotmail.com)>
Hi Mike
Expancel is plastic micro balloons and Q-Cel is glass micro balloons. Expancel is easier on the lungs and sands easier especially if you mix it dry enough. With Expancel I start with a thin coating of resin, then wait till it gets really tacky, then apply Expancel that is so dry that it wouldn't stick to a dry surface. It's just amazing how much more you can add to get to this point. Then when applying, a heat gun helps things along, I like using spackle tools. I also like to heat tools as well as Expancel. Best to get it done in 1 shot, so overfilling even 3/16" or 1/4"too much is better than having to add more fill. This mixture sands like dense balsa wood. Really goes away quick with 80 grit. Put breeze to your back and neighbors car downwind (make sure your car isn't downwind!). If you are low in some areas, if still partial sticky, add some more. When it cures for a few hours, you can razor trim a bit too. Once cured, if a lot more is needed in areas, bite bullet, wet, !
wait till real tacky and refill. Then you will need to deal with the hard resin layer when sanding and the not too dense Expancel. Ifonly tiny inperfectionsand slight lowareas, I like 3M Flowable putty. For deeper areas, but not worth it to refill with Resin and Expancel, I like lightweight Rage. Really dry Expancel is a really light weight fill. Ron P.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=513655#513655
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n7188u
Joined: 15 Nov 2015
Posts: 403
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| Posted: Sun Jun 16, 2024 11:05 am Post subject: Re: Expancel |
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Ron,
Expancel is great stuff. I happened to have enough for my project but always wondered what could replace it.
The only epoxy filler I have seen that looks like Expancel is the West System 410 (Per the SDS: A blend of thermoplastic polymer microspheres and inorganic amorphous silicates). It has that tan color but it also has glass. It does have plastic copolymers and phenols so it may be close to Expancel.
You can buy a small can of 410 and try see how it compares.
Chris
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