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General Category => Plans, Projects, Building and Flying Tips => Topic started by: Deerslayer on October 21, 2016, 08:41:23 AM

Title: Foamboard differences and a simple question
Post by: Deerslayer on October 21, 2016, 08:41:23 AM
Up until now, I have always used the Adams' Readi-Board from Dollar Tree. Recently, I picked up some Ross' Craft Board (made by Elmers) at Dollarama.

Both product heat bond a paper covering to the foam sheet. Here the similarity ends. Apart from slight color difference, there are 2 other significant differences:

1) The Elmers product seems to be more water-resistant, i.e., you can apply a water-based paint, such as Minwax Polycrylic Finish Sealer and the paper quickly absorbs it yet does not wrinkle or come loose. I cannot get the paper to cleanly release from this foam - it always tears and separates, leaving a paper film on the foam. I have tried using a covering iron, heat gun, applying water, alcohol, etc., to no avail. 

2) The $Tree board easily releases its paper covering. I have built lots of foamy machine using this product, with the paper stripped off. The result is a marginally  lighter but more fragile structure.

From what I can determine, there is a difference in the paper used by each of these companies and the heat setting temperature would have been slightly higher for the Elmers.

Does someone have a good technique for easily removing the paper from the Elmers board without damaging the foam?
Title: Re: Foamboard differences and a simple question
Post by: ganguy on October 21, 2016, 09:12:21 AM
I've been using Elmer's for the last few planes and have no trouble stripping the paper covering. The only trick I can suggest is the pull angle should be vertical for best results. Like you, I love the paintability., but don't count too much on the waterproofness of it.

Another tried and true method is to fly the plane into a tree and leave it there for a week!

Anyway, the Foam &Hot Glue Pioneers Society is shifting to thicker foam from Home Depot - my Yagi is superb in flight, and my Fokker DR1 is almost finished, a dead copy of Gord's.
Reg
Title: Re: Foamboard differences and a simple question
Post by: Deerslayer on October 21, 2016, 09:22:42 AM

Anyway, the Foam &Hot Glue Pioneers Society is shifting to thicker foam from Home Depot - my Yagi is superb in flight, and my Fokker DR1 is almost finished, a dead copy of Gord's.
Reg

I never like to be on the bleeding edge of technology (40 years of computer systems development and support taught me that, in spades!).

Steampunk for me - for instance, this is what I am now working on to solve my rabbit problem, soon will be converted to a flying version suitable for Canada goose control.


Title: Re: Foamboard differences and a simple question
Post by: Flypaper 2 on October 21, 2016, 10:37:13 AM
I use them for their separate individual traits.
 For instance, a Pizza Box with the paper off the main square for lightness then laminate the Ross stuff at the front 1/4 across the width.
 This way you get the best of both worlds. ;D
      Bunch if ducks and geese playing offshore of my front lawn. Don't they know to enough toget in out of the rain.!! ??? :P
Title: Re: Foamboard differences and a simple question
Post by: ganguy on October 21, 2016, 12:17:51 PM
There's a Digger Dan on my front lawn tearing up the driveway and culvert. No ducks

Gord's use of foams is called EmRoss integrated structural design!
Title: Re: Foamboard differences and a simple question
Post by: Flypaper 2 on October 21, 2016, 12:57:42 PM
You need a Canada Goose for a pet
 I just watched on the Discovery channel a Canada goose chasing a 400 lb Silverback gorilla and he was running as fast as he could. :P ;D :o :laugh: