background-image: url(img/people.png) .left-column50[ # Welcome to the Future of Access Technologies Week 6, Brief Intro to Laser Cutting CSE493e, Fall 2023 ] --- name: normal layout: true class: --- # Important Reminder ## This is an important reminder ## Make sure zoom is running and recording!!! ## Make sure captioning is turned on --- [//]: # (Outline Slide) # Learning Goals for today - Introducing your next assignment - Brief introduction to Laser Cutting - Actually preparing an item to laser cut --- # Next Assignment (1/3) 1) Pick something you've implemented - Prefarably interactive (some sort of web or app based user interface) 2) Pick a task to complete on it Reach out if you do not have an interactive tool - Ideally do this before class - We're trying to figure out whether we can spend any class time on this Friday, but don't count on it --- # Next Assignment (2/3) 3) Test it out with your accessibility technology - Be clear about which accessibility aid or perceptual concern you will be addressing 4) Fix the problem .footnote[If do-able and you need to be re-evaluated, you may *additionally* use automated testing and generate more UARs] --- # Next Assignment (3/3) 6) Write a 1 page document describing what you did (please see the assignment for details on what is required 7) Make sure it is accessible, and not a PDF, and then submit it --- [//]: # (Outline Slide) # Learning Goals for today - Introducing your next assignment - **Brief introduction to Laser Cutting** - Actually preparing an item to laser cut --- # Some key things to know about Laser Cutting We're using a [Glowforge](https://glowforge.com/). - It takes SVGs as input - It can engrave, cut, etc - We're providing plywood, 3mm thick [double check with calipers] - We will not engrave during lab, it slows things down too much, but we may cut --- # What can you do? .left-column40[ ![:img Illustration of cutting scoring and engraving first with those words and then with stars. Cutting cuts a hole; Scoring outlines something; and Engraving burns it into the wood, 70%, width](img/3dprinting/laser-Cut-Score-Engrave.png) ] .right-column60[ Cutting: Makes a hole. - Any line can be cut Scoring: Doesn't cut all the way through. - Again, any line. Use a different color Engraving: Burns. Can do greyscale. - Images. Make sure they're not too dark. - Add in a drawing program after Tinkercad ] --- # How we will create SVGS First create a design in TinkerCAD (or other CAD software if you know it well) - You should group everything together that is touching - Place it carefully. The base plane will determine what is part of the final SVG - We will not engrave during lab, it slows things down too much, but we may cut - Export it as SVG (demo) - Include mm as units - Re-export *with images emedded* if you add them --- # Your process .left-column50[ Measure thrice Make an svg Print it on paper Cut it out and check your measurements AGAIN ] .right-column50[ Decorate ] --- # Example: My bag holder ![:img Screenshot of a bagholder in tinkercad titled Mankoff Bag Hanger - V1, 30%, width](img/3dprinting/bagholder-tinkercad.png) --- # First print: On Paper ![:img Initial design printed on paper is about the size of a single finger, 30%, width](img/3dprinting/tiny.jpg) --- # Measuring ![:img Calipers stretch the width of four fingers and show a measurement of about 76mm , 30%, width](img/3dprinting/measuring.jpg) --- # Other Important Measurements The amount of wood removed by the laser cutter as it burns through the wood. Should always test for each new type of wood and wood thickness [Instructable](https://www.instructables.com/How-to-Adjust-for-Wood-Thickness-and-Kerf-on-a-Las/) on how to do this Only an issue if you're making a box or something else that has to assemble Use calipers to measure! --- # Reprinted on paper Reason? I used 76mm for the *outer* dimension instead of the *inner* one! ![:img Another print on paper is still too small, 30%, width](img/3dprinting/measurement-error.jpg) --- # Final print Do you see the problem with this design?
![:img A laser cut bag holder big enough for a hand!, 30%, width](img/3dprinting/first-print.jpg) --- # The End! --- # Other software options [Adobe Illustrator](https://www.adobe.com/products/illustrator.html). Best for most tasks if you have it [AutoCAD](https://www.autodesk.com/products/autocad/overview?term=1-YEAR&tab=subscription) (free for students). Probably overkill [Inkscape](https://www.autodesk.com/products/autocad/overview?term=1-YEAR&tab=subscription) (free). Best free option