First of all thank you to everybody for your answers, I see that it´s a very active forum.
I taught myself to stencil Hitchcock chairs back around 1958. The stencils were then made from drafting linen, a fine linen cloth impregnated with starch. The material was semi-transparent, so you could trace the design with pencil by placing the linen on top of a master drawing. You could make as many identical stencils as you liked. Cutting was done with an xacto knife.
Drafting linen has been supplanted by drafting Mylar, a transparent plastic with one side frosted to take pencil markings. That is probably the material you see in the videos.
There is a machine called a vinyl cutter that operates a tiny knife and is controlled by CNC. It can make a certain kind of sign, but might be able to cut stencils.
What Is a Vinyl Cutter? | eHow.com
I am sure a laser can cut Mylar, but maybe stacking several sheets for simultaneous cutting would weld the edges of the cuts.
Larry
I have searched drafting Mylar and yes that is the material! I have seen that other sites call it acetate, which maybe is the chemichal composition, there are other materials too very similar it´s crazy.
They say that normally they are 0,2 to 0,3 mm in most manufacturers, so the answers are responded.
I didn´t know those machines, I have some experience with cnc lathes and mills but I didn´t know that you can use literally a knife on them. I have asked some suppliers if it would be possible to cut some sheets at the same time and now I´m waiting for their response.
Thank you very much Larry
Would that not depend on what they are being used with? (Paint, glue, acid, whatever)
Would that not depend on the SIZE of the stencil? Is its opening 50mm or 500mm?
Something that cuts the stencil material that is affordable within the economics of what you are doing, right?
Sounds like a subject to study up on to me.
Would that not be a consideration in choosing the equipment? An outrageously expensive machine could conceivably do fifty in a stack without serious degradation of stencil quality in the lower layers. Would it still pay for itself?
Sounds like additional study/research of the multiple factors would be in order.
You are right I need to learn a lot of things
but I think I´m in the right way.
I'd guess that mass produced stencils are die cut. A 5000 dollarish laser cutter would cut them pretty quick no problem.
There are tons of plastics that would work. Whatever is cheapest and will lay flat.
The problem is that I have tons of designs, if I need to create a lot of dies to cut them and that looks too difficult: I need a lot of space, a milling machine or paying a lot of money to order them to a company... Maybe it´s the fastest way to manufacture the stencil but I think I can´t afford that.
The vinyl graphics guys nearby also make stencils, and use a product called "buttercut",
and it's good enough for light sandblasting. These are sticky backed for one time usage.
I believe it's made by 3-m
I have searched and it seems like a scissors, right?
I didn´t know that company, interesting.
He could get a vinyl cutting machine for less than $500
Yes, the point is if it´s possible to cut more than one layer, I´m waiting for some answers from manufacturers.
Reminds me of an old process called "frifing".
Lord Byron
I haven´t been able to find anything with that name.
THe prices are very low, which is great, but it seems that you can only cut some predefined letters.
I believe the Crickut cannot cut things like that. It cuts easily designed shapes, only.
Now, the machine I bought my daughter, and I forget the name, 1 G, will cut anything you program into it. It IS work making the .dbx or whatever program, but she can cut a 1/32 period, or hundreds of odd shaped holes in a 4" snowflake.
It easily cuts 110 lb. card stock with carbide stylii. The card stock, with lots of clay in it, is harder on the stylus than plastic of most forms would be, except, possibly, FG filled.
George
It takes, I believe, up to 15, maybe 18 inch material. Also, pen in place of the cutting stylus, draw larger plans than a standard printer will print.
I´d like to be your daughter. And now seriously, I assume that your daughter is with you at home, I know that maybe not but, if that is the case, Could you take a look at the name of that machine?
Ellison is the generic name in education, like scotch tape, for hand powered stencil cutters. They do make custom dies, no idewa on cost.
Bill D.
Ellisoneducation.com - Prestige Pro Machine
Ellisoneducation.com - Catalog
Ellisoneducation.com - Custom Die Services
They have an electronic machine for 500 $ but I think it would not be possible to cut too much sheets at the same time.
As above a std vinyl cutter is what you want. Just use stencil material in place of vinyl. I know they come a good 5+ feet across and im sure you can get larger still. Vinyl comes on 50 meter rolls. Stencil probably a bit shorter as it is thicker normally. You can get a lot better detail with a swivelling knife than a laser can though! hence why vinyl cutters for sign age don't use lasers but little carbide blades still!
Very interesting comment about the detail you can obtain with laser, I´ll remember that.
Exacto knife and vinyl, light cardboard to start
CNC program on computer and 2D Knife cutter.
As stated most sign shops can make them.
I´ll follow that way maybe , but there are some details that could make this a succesful bussines or a ruin.
Most cheap craft store stencils are probably made from HDPE because it's flexible and durable.
Thank you, I didn´t know that material.
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Thank you very much to everybody