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FenGiddel
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Joined: 11 Jul 2009
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PostPosted: Fri Mar 15, 2013 3:13 pm    Post subject: Using foam core Reply with quote

I am wondering how to make nice clean corners when building a box shape, foe example. How do you hide the rough edges and foam interior of the sheet you join to another to make a corner or edge? Or is this possible?
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Skin-Job
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Location: London, England

PostPosted: Fri Mar 15, 2013 4:33 pm    Post subject: Reply with quote

Two basic approaches:

1. Cut the corners on a bevel.

For example, a 45 degree angle on each piece to form a 90 degree corner.
Bevel cutters are available at craft stores for cutting framing mattes.

2. 'Wrap' the corner.

Cut one piece a little longer and then remove a strip: one side of the paper and the internal foam, leaving a paper flap the thickness of the board. Then glue the paper flap over the exposed foam of the core. Tidy.



Karl
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joberg
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PostPosted: Fri Mar 15, 2013 7:59 pm    Post subject: Reply with quote

^^^
What proper said ...just don't use regular contact cement, it'll melt the foam inside.

I use either white glue or a contact cement without solvent (this is what melts the foam).
You can also cut triangles to put inside your corners (hot glue gun will do the trick to secure those fast and make your corners strong.
I don't know what kind of box you're doing, but you should cut the edges of the bottom in L shape (all around): bottom of the L is the paper alone and the wall of the L is the foam part.

So when you close your box, you'll fit that bottom inside the walls of your box.



There, I hope the drawing is helping Wink
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FenGiddel
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PostPosted: Fri Mar 15, 2013 9:19 pm    Post subject: Reply with quote

Thanks, proper and joberg! Great tips, and the drawing definitely solved my last couple of questions, joberg.

Excuse the 'off topic', but I'm dreaming up a nice launch pad display for my Product Enterprise Eagle Transporter and foam core seemed to fit the bill for supporting the ship. I say 'dreaming up', since I won't have room for a scale launch pad, so I'm going to pare it down to manageable shelf size.

Thanks again!
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joberg
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PostPosted: Sat Mar 16, 2013 9:16 am    Post subject: Reply with quote

You're welcome...how big is your Eagle?
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FenGiddel
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PostPosted: Sat Mar 16, 2013 1:54 pm    Post subject: Reply with quote

12 inches.
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andy
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Location: Rochester, NY

PostPosted: Sat Mar 16, 2013 2:27 pm    Post subject: Reply with quote

You can also cut trenches in the foam core by cutting one side just through the paper covering twice just the width of the foam core, and peeling it out using the tip of a pen cap. Then fold to one edge or side of the trench, by laying it on the table and maybe slightly scoring the inside of the folding side. Hot glue always worked best for me too.

Andy
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joberg
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PostPosted: Sat Mar 16, 2013 4:16 pm    Post subject: Reply with quote

Since I'm used to Bigature, 12 inches is nothing ...You want to do the landing pad?
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FenGiddel
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PostPosted: Sun Mar 17, 2013 8:12 am    Post subject: Reply with quote

joberg wrote:
Since I'm used to Bigature, 12 inches is nothing ...You want to do the landing pad?


Braggart! Laughing

Scale launch pad is too big. Found a nice color template online I'll use at 14 inches for the effect.

Unless you have a brainstorm for me!?!

Cheers!
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joberg
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PostPosted: Sun Mar 17, 2013 9:47 am    Post subject: Reply with quote

Time to change the size of your shelves ....but seriously, remind me you just want the launching pad (is it a cross on top of a rectangle that's on top of a big circle if my memory serves me well?)

You could always cheat by just building half of want you want...just make sure the model fits, but you don't need the whole thing.
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