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Author Topic: Contact cement in the US for mylar covering.  (Read 196 times)
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randoloid
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« on: September 11, 2018, 08:02:44 AM »

I've searched the forum before posting this, have found (and read) the pdf tutorial from the plan gallery, but I'm having trouble choosing the correct contact cement. 

My particular issue is thinning a contact cement.  I've now purchased two different brands.  (Dap from Home depot and Goop from Michaels Craft)  The Dap brand even says thin and clean up with Acetone, but when I did, it separated into a liquid and a big blob of rubber.  The Goop brand did marginally better but never completely mixed together -  I then tried thinning with Nitrate Dope thinner with somewhat better results.- I did a small test area on a crashed fuse and while it sorta stuck, it was super fragile and I want better adhesion-  perhaps I need another coat or thicker consistency with the cement.

In my research- Most of the brand recommendations came from the UK and my search yielded nothing.  Derek McGuckin's tutorial mentions Velcro brand available at JoAnn Fabrics but I can't find it there or anywhere else.

I'm building a P-30 and was excited to use mylar to keep things light, but at this point I'm ready to cover it in Isaki and be done it.- I know i can cover it well with that.

Any suggestions greatly appreciated.
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dephela
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« Reply #1 on: September 11, 2018, 09:07:00 AM »

I've never had a problem using Sig Stix-it!

https://sigmfg.com/products/sig-stix-it-covering-adhesive

Dennis
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Dennis
DerekMc
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« Reply #2 on: September 11, 2018, 01:19:27 PM »

Amazon carries Velcro brand cement:

https://www.amazon.com/VELCRO-Brand-Adhesive-Plastics-Tube/dp/B001B39PFG/ref=sr_1_3?ie=UTF8&qid=1536686002&sr=8-3&keywords=velcro+glue+adhesive

I haven't used the Velcro Cement in a long time. I use Deluxe Materials Cover Grip.  It works well and it thins with water.

https://i.imgur.com/sOul4mU.jpg?1

One of these days I'll update the tutorial. It's at least 10 years old!
Contact cement in the US for mylar covering.
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Derek
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« Reply #3 on: September 11, 2018, 01:20:42 PM »

I use Dap contact cement, solvent base, not water base. I did have the same result using acetone. What works is MEK. The problem is true MEK is not readily available in Calif. What also works, and is available in Calif, is https://www.amazon.com/FamoWood-730011-Wood-Filler-Thinner/dp/B0041NRFMS/ref=sr_1_2?ie=UTF8&qid=1536684591&sr=8-2&keywords=famowood+thinner putty thinner.

BTW - I do prefer the DAP. I t has a slight tint and I can see how much I'm applying. I thin it to the consistency of about milk.

Norm
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Tmat
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« Reply #4 on: September 11, 2018, 02:21:25 PM »

I also use DAP contact cement. I thin with Toluene (or Toluol) which we can still get in Canada. It's my favorite that I've tried (and I have tried many other adhesives!).

https://www.homedepot.com/p/DAP-Weldwood-3-fl-oz-Original-Contact-Cement-00107/100195615?MERCH=REC-_-PIPHorizontal2_rr-_-100125525-_-100195615-_-N

Tmat
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