Author Topic: Vacuum blanket protection  (Read 2777 times)

Offline Chadwick

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Vacuum blanket protection
« on: November 09, 2012, 07:16:20 PM »
With pictures.
 ;)

Exposure blankets.
Seems they are forever getting wrecked, due to many factors.
Nothing worse than trying to get a seal when you've got holes.

I'd say this is an idiot-proof way of keeping them alive
without any patching and/or excessive language.

Take your old wrecked blanket ( you didn't toss it did you? )
cut two 4" wide strips, preferably about 8" longer than
your longest frame bar if possible.
And two others for the short bars.

Lay them rubber down, fabric up, on your frame.
( your exposure blanket should be the same )
Looks kinda goofy, I know, but whatever.

Take your 'strings' ( whatever the proper term is ),
and lay them across the corners of the back strip.
( Arrow in pic )

Close the cover, fire up the pump and voila.
I think it takes a few seconds longer to suck down, but
if you lay them out like I did here, you get a perfect seal.

This is a newman, but I use the same strips on some smaller
statics we have without a problem.

I was using cloth strips before, but sometimes it wouldn't
seal properly, and thin cloth didn't protect the blanket as well
in the corners and such, was still getting wear on the blanket.

The blanket material is flexible, durable, and works like a dream.

I've had it not seal properly a couple times because I mis-laid
the strips, but it's rare. Once you get a feel for it you could
do it in your sleep.

So yeah, not a single pinhole, stretch, tear, nothing
in at least two years of constant use.
Not sure how long my luck will hold out, but so far, so good.

Cheers.

* yes, I blurred out the image I was exposing


Offline Screened Gear

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Re: Vacuum blanket protection
« Reply #1 on: November 09, 2012, 07:22:49 PM »
I do the same thing but only use two pieces and cover the small side of the frame. Most of the damage is from the corners so doing it this way makes it faster.

Offline jsheridan

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Re: Vacuum blanket protection
« Reply #2 on: November 09, 2012, 07:28:09 PM »
even easier.. 

head down to Joans fabric or you local craft store and buy a couple yards of black fabric. Then tape one edge to the glass and fold it over the frame before exposure. It not only helps with the corners, it's keeps any ink or tape residue off the blanket. When the cloth gets dirty, just toss and cut a new piece.
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Offline Chadwick

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Re: Vacuum blanket protection
« Reply #3 on: November 09, 2012, 10:03:21 PM »
Tried the black fabric thing long ago. Didn't cut it, for us.
Too many new kids in the mix for only 2 straps, as tape residue and such on the long sides wound up killing blankets anyways.

Whatever works is all good.

I was just happy I'd found a solution for our situation.
Figured I'd post, as, a long time has passed, and the blanket is still mint.
( i've seen many a blanket destroyed )

Cheers.

Offline jason-23

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Re: Vacuum blanket protection
« Reply #4 on: November 09, 2012, 10:52:17 PM »
I borrowed a new fender cover from my old job  and cover my screen with that before vacuuming the down. Charlie Taublieb told me to do that about 6 years ago at a trade show workshop.

Offline Gabe

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Re: Vacuum blanket protection
« Reply #5 on: November 10, 2012, 12:43:01 PM »
even easier.. 

head down to Joans fabric or you local craft store and buy a couple yards of black fabric. Then tape one edge to the glass and fold it over the frame before exposure. It not only helps with the corners, it's keeps any ink or tape residue off the blanket. When the cloth gets dirty, just toss and cut a new piece.
any type of black fabric or you use a specific type if so what type?
thanks
Gabe

Offline jsheridan

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Re: Vacuum blanket protection
« Reply #6 on: November 10, 2012, 06:38:08 PM »
]any type of black fabric or you use a specific type if so what type?
thanks
Gabe

Honestly I don't know. I just grabbed something off the shelf that felt like it would do the job, thicker than normal fabric and synthetic fibers.
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Offline ScreenFoo

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Re: Vacuum blanket protection
« Reply #7 on: November 12, 2012, 02:26:10 PM »
An XXXL Tall shirt works perfect for 23x31's.  ;D

Offline Screened Gear

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Re: Vacuum blanket protection
« Reply #8 on: November 12, 2012, 02:59:40 PM »
An XXXL Tall shirt works perfect for 23x31's.  ;D

An XXXXXXL shirt works great for a blanket.

Offline tpitman

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Re: Vacuum blanket protection
« Reply #9 on: November 13, 2012, 08:16:31 PM »
I've got a couple of crappy anti-fatigue floor mats from Harbor Freight that I cut 4 squares out of to use on the corners of my frames. About 1/4" fairly dense foam. Does the job for me, so far.
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Offline Itsa Little CrOoked

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Re: Vacuum blanket protection
« Reply #10 on: November 13, 2012, 11:02:18 PM »
Since I've gone entirely to "wet suit material" for my vacuum  blankets, I don't worry tears any more. I buy mine at the local fabric store, and it lasts a long time. Cheap too.

A "real" blanket for my NuArc is about 200, if I remember correctly. My wet suit blanket is about 10 or  12 bucks.

It looks like a mouse pad, but thinner...with fabric on BOTH sides. I just leave it pretty loose, with the fabric side away from the screens. YMMV. It isn't quite as flexible as the real deal.

I also use the same material for shirtboards that need a little cushion, like when printing over a collar.

I would love for someone to tell me why this is a bad idea. (Seriously I would.) It's even black on the inside, which is good for stopping light scatter.

BOTH SIDES. I had posted earlier it has fabric on one side. Duh....

« Last Edit: November 14, 2012, 08:16:26 AM by Itsa Little CrOoked »

Online Frog

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Re: Vacuum blanket protection
« Reply #11 on: November 14, 2012, 07:39:07 AM »
Stan, that seems really cheap for wet suit material.
For years, this has been the "place to go", and a 40" x 50" piece of 3mm, runs $32 (plus 35% for getting a half sheet)

http://www.foamorder.com/neoprene.html
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Offline Itsa Little CrOoked

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Re: Vacuum blanket protection
« Reply #12 on: November 14, 2012, 08:13:53 AM »
We have a fabric store in Wichita in one of the malls that has coupons from time to time, and the last time I bought material, it was 40% off. And my NuArc is a smallish unit, made for manual screens.  I can get two blankets out of the width of the material. But yeah, I should have noted that. Truth is, $10 was generous, I don't really remember. The store is a JoAnn's fabrics.

So, do you use it too? It doesn't *quite* have the crazy flexibility that the neoprene that NuArc uses, but I figure I don't need an image clear out to the margin, 1 inch away from the frames. 

Stan

P.S. I just shot a screen and noticed my wetsuit blanket is covered by fabric on BOTH sides, not like I stated. It's just that one side is black fabric, not black neoprene and I missed it. The other side is bright green.
« Last Edit: November 14, 2012, 08:22:08 AM by Itsa Little CrOoked »