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Author Topic: Cutting Memory foam for camera backpack  (Read 506 times)

prfcdoc

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Cutting Memory foam for camera backpack
« on: May 28, 2017, 11:43:49 AM »
I've always had a back pack with foam for carrying my camera equipment but the foam was always shedding and I decided, when we got a new mattress topper, to cut the old one into my camera protection for my pack. Has anyone ever cut Memory Foam? How do you do it? I've tried a serrated knife, an ultra sharp kitchen knife and scissors. None of them make very smooth cutting. The scissors might be the best but are very hard to use, especially in the cutouts.
Bob
Bob & Kathy
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5th wheel TBD

Tom

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Re: Cutting Memory foam for camera backpack
« Reply #1 on: May 28, 2017, 11:46:24 AM »
An electric bread carving knife works fine. For really thick foam, you might need one with a longer blade.
« Last Edit: May 28, 2017, 03:52:16 PM by Tom »
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Larry N.

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Re: Cutting Memory foam for camera backpack
« Reply #2 on: May 28, 2017, 01:16:18 PM »
Have you tried a utility knife (box cutter, etc.)? That's what I usually use, though the foam I cut isn't memory foam, just electronic packing foam, or the same stuff you get in a pre-made case for electronics. It does take several passes to get a smooth cut and get to the right depth for the cutouts for holding gear. I actually have both the large utility knife which works for so many things, and also a very small pocket size one that improves accuracy for the depth and final shaping. Of course both do best with a new blade.

Or perhaps a razor blade...???
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Pugapooh

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Re: Cutting Memory foam for camera backpack
« Reply #3 on: May 28, 2017, 02:07:07 PM »
We always used an electric carving knife.  Anything else makes a mess.
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Tom

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Re: Cutting Memory foam for camera backpack
« Reply #4 on: May 28, 2017, 03:51:50 PM »
Quote
We always used an electric carving knife.

Rats, that's what I meant to say, not 'electric bread knife'  :-[
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prfcdoc

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Re: Cutting Memory foam for camera backpack
« Reply #5 on: May 28, 2017, 05:53:03 PM »
It's 3 inches thick and I don't have an electric carving knife. Had one 30 or 40 years ago but it must have died from boredom. Didn't see it when we downsized a couple of years ago.
I'll ask a few friends. Don't suppose I could rent one? Maybe at a party rental place.
Bob
« Last Edit: May 28, 2017, 05:54:54 PM by prfcdoc »
Bob & Kathy
Saving and researching for our future extended road trip.
2017 F350, Diesel
5th wheel TBD

Pugapooh

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Re: Cutting Memory foam for camera backpack
« Reply #6 on: May 28, 2017, 05:57:03 PM »
If you are near a Goodwill you might find one cheap.  Otherwise,a serrated knife pulled rather than a sawing motion seems to work ok. 

Tom,I knew what you meant but was trying to clarify.
2006 Dutchmen Denali 29 RL fiver
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2001 GMC Sierra 3500
1996 Dodge Ram 1500

Tom

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Re: Cutting Memory foam for camera backpack
« Reply #7 on: May 28, 2017, 06:27:51 PM »
Quote
If you are near a Goodwill you might find one cheap.  Otherwise,a serrated knife pulled rather than a sawing motion seems to work ok.

Both good suggestions. 

Quote
Tom,I knew what you meant

Me too, but sometimes my fingers don't type what my brain is saying ;D

Quote
but was trying to clarify.

Thanks!
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hedhunter9

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Re: Cutting Memory foam for camera backpack
« Reply #8 on: May 28, 2017, 07:53:57 PM »
Build your own 12volt electric hot wire cutting tool to melt it like butter...  I dont have one now, But I built one 5 years ago to cut a ton of
foam sheets we put in our pole barn walls..  Faster and no mess... You can google it..

Bob
Bob n Sharon
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prfcdoc

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Re: Cutting Memory foam for camera backpack
« Reply #9 on: May 28, 2017, 07:57:16 PM »
Here
Bob & Kathy
Saving and researching for our future extended road trip.
2017 F350, Diesel
5th wheel TBD

prfcdoc

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Re: Cutting Memory foam for camera backpack
« Reply #10 on: May 28, 2017, 08:02:36 PM »
I put a piece of regular foam in the bottom of the pack to protect my back from the camera parts. I poked a hole with the serrated knife, cut the foam with scissors. It's much like cutting human tissue, fat or, more accurately, fascia. Tougher than fat but similar due to the lack of planes to dissect. It came out ok. I gave up on the electric carving knife due to the time and complexity of obtaining it. The electric hot wire is a good idea. Since I have a king size memory foam topper to cut up I can try that as well in my spare time.
Bob
Bob & Kathy
Saving and researching for our future extended road trip.
2017 F350, Diesel
5th wheel TBD

Punomatic

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Re: Cutting Memory foam for camera backpack
« Reply #11 on: May 28, 2017, 09:32:02 PM »
An electric bread carving knife works fine. For really thick foam, you might need one with a longer blade.
X2 I found one at a thrift store. They work great for cutting foam.
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