Is XPS foam lighter then balsa?

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whodathunkit
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Is XPS foam lighter then balsa?

Post by whodathunkit » Tue Mar 05, 2019 5:43 pm

Is XPS foam lighter then balsa?
If so is any one trying it for making there own light weight arrow fenders .


What type of automobile can be spelled the same forwards & backwards?

ironband
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Re: Is XPS foam lighter then balsa?

Post by ironband » Tue Mar 05, 2019 11:52 pm

I'm working on a set right now (and here I thought I was being creative...)

It seems to cut and sand well, and as I understand it a thin layer of acrylic paint will serve to protect and strengthen them.



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Re: Is XPS foam lighter then balsa?

Post by whodathunkit » Wed Mar 06, 2019 8:38 pm

Hay that's grate Ironband. got any pic's of them?

You're right it can be painted with water base acrylic or latex paints.
I don't know how well the white Krylon craft foam primer spary paint will work on it.
Do you know if a clear gloss water base polyurethane spay paint can be spayed on it as well?

Been doing some reading about XPS foam in RC airplane mags & thought it would work well for making light weight fenders!
But unsure of how well it paints up .. and or the resins that can be use as a hardener on it to make it hard like a plastic.
Still have lots to learn about it .. but would like to try it in my model making as well.
Last edited by whodathunkit on Wed Mar 06, 2019 8:44 pm, edited 1 time in total.


What type of automobile can be spelled the same forwards & backwards?

ironband
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Re: Is XPS foam lighter then balsa?

Post by ironband » Wed Mar 06, 2019 8:41 pm

Yeah, tests with acrylic gloss paint have been less than satisfactory. However, I think some PVA and then urethane over that could be quite durable.



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Re: Is XPS foam lighter then balsa?

Post by whodathunkit » Wed Mar 06, 2019 8:48 pm

When you say PVA .. are you talking about PVA glue ?


What type of automobile can be spelled the same forwards & backwards?

ironband
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Re: Is XPS foam lighter then balsa?

Post by ironband » Thu Mar 07, 2019 9:31 am

Yeah, basically Modge Podge or White glue watered down.

I haven't finished a set yet to take pics of, but when I have something pic worthy I'll throw it up.



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Re: Is XPS foam lighter then balsa?

Post by whodathunkit » Thu Mar 07, 2019 7:21 pm

Thank's i'll enjoy seeing them!


What type of automobile can be spelled the same forwards & backwards?

ironband
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Re: Is XPS foam lighter then balsa?

Post by ironband » Fri Mar 15, 2019 8:29 pm

Image

They're coming along.



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Re: Is XPS foam lighter then balsa?

Post by whodathunkit » Sat Mar 16, 2019 3:49 pm

WOW ironband !
Id say they were as well .. look'en really good! Thank's for the pic!

Seeing your scale in your pic .. reminds me I need to get a bigger one that will weigh over 25 oz for the rigs.
And is that 1 gram I'm seeing in read out on your scale?


What type of automobile can be spelled the same forwards & backwards?

ironband
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Re: Is XPS foam lighter then balsa?

Post by ironband » Sat Mar 16, 2019 4:24 pm

No, sorry. Not that light :)

12.2g



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Re: Is XPS foam lighter then balsa?

Post by ironband » Fri Apr 05, 2019 10:59 pm

Here they are in their final form.
Image



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Re: Is XPS foam lighter then balsa?

Post by Eagle » Fri Apr 05, 2019 11:51 pm

Looks like its in race form.



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Re: Is XPS foam lighter then balsa?

Post by Speedster » Sun Apr 07, 2019 3:49 am

Nice job. Fenders certainly do make them look like a race car.



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Re: Is XPS foam lighter then balsa?

Post by whodathunkit » Tue Apr 09, 2019 8:25 pm

WOW they turned out look'n good!
Going to have to try this soon.. thanks for the tips!


What type of automobile can be spelled the same forwards & backwards?

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