Workshop: Creating stencils with Inkscape and Potrace - Monday, March 16th

Continuing the discussion from 2015 classes and workshops:

I just finished a workshop on open source laser cut maps workshop and its time to start planning the next one.

What
In this workshop we will be going through the process of creating stencil suitable for the laser cutter (new and shinny way) or printing and cutting with an exacto knife. (Old school!)

The process:
We will be selecting photo or image from google image search, Altering the photo into a simple one or two color stencil. Using potrace to convert the image into a vector. Cleaning up the vector with inkscape to make it work in the laser cutter.

If you don’t have your VHS laser cutting training, 3rd party laser cutting services also are available like ponoko or Maker Labs or you can use a normal printer.

A laptop is required for this workshop.

Please install the following software before the workshop.

When
Monday, March 16th, 2015 @7:30pm till 9:30ish

Where
Vancouver Hack Space, 1715 Cook street.

Who
Anyone, Guests, VHS members.
A donation $2 is suggested but not required.

Please RSVP

Examples:

https://instagram.com/p/tblijoA5ef/?modal=true

https://instagram.com/p/q_L9JyA5eD/?modal=true

https://instagram.com/p/rykVELA5Tj/?modal=true

https://instagram.com/p/ryke54A5Tr/?modal=true

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In. Tonight was great, thanks.

More examples of stencils that I made BEFORE the laser cutter, BY HAND with a exacto knife.
These are from 45 west almost 6 years ago.

Looking forward to this.

This is great! I was interested in these things for long time. Although, I know how to prepare half tone, or vector graphics for cutting stencils in Corel and Photoshop, I want to attend. There are many ways to prepare images and simple one to another order, or as little as two thing rendering can matter big time in shape preparation process. It will be great to do it in group.

RSVPd.

Neo

I’m looking forward to finding more ways to create projects for the laser cutter - thanks Steve!

Update

We will be using GIMP ( http://www.gimp.org/ ) instead of Paint.net
GIMP is free, Open source, and works on all the major platforms (Windows, Linux, and Mac) This matches potrace and inkscape and should make this workshop OS independent.

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Here is the initial version of the tutorial. I will be updating and adding to it today.

Here are the raw files.

Original images.

image

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For tonight, should we come with images in hand or are we all using yours
to make things easier?

Feel free to bring your own images.
I will be going through the tutorial with the images above but the techniques should work with any image.
After the main tutorial I will walk you though doing it with your image.

I’ll have to take this the next time you offer the workshop. It sounds like a fun workshop.

We had 18 people show up tonight for the workshop
We raised $45 in donations.

image

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I came across this today. Rainworks: Rain-Activated Art

The product they are using is called Never Wet

It would be a cool application for stencils and it does tend to rain in Vancouver :smiley:

3 Likes

I’m going to buy some Never Wet this week and start stencilling the sidewalk in front of my house…
Just gonna have to wait for a few sunny days for the sidewalk to dry off…

The legalities of this are likely similar to graffiti so you might want to stay away from in front of yer haus!

FYI I am not counselling anyone to break the law, bylaws, etc. I just think this is really cool.

There should be some left in the chemical cabinet. I bought some and left it at the space.

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Thanks to @funvill for the great workshop. Here’s one I did:

Original:

Stencilized:

And I mentioned that I used a similar process for etching mirrors. What I did was the same process, then scribble HEAVY with a pencil over the lines, flip it upside down onto the back of a mirror and press the extra graphite onto the back to transfer the art, then use a dremel to etch the backing off the mirror and backlight it.

Other than having to worry about islands, the process is there same. Here is the artwork for a Plants vs Zombies stencil if anyone cares to de-island-ify it:

and the original if anyone want to try their… hand… at it :stuck_out_tongue_winking_eye:

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image
image

1 Like