Computer Controlled Cutting

Week 4 - Computer Controlled CUtting - NOTES

General info

Things to do

Questions to ask

Useful resources

Assignment

Raw class notes

CAD week reviews

Osar Mas

To see : MatterMachine

Karitas from Iceland

Franco from puebla

XDesign is solidworks like but in the browser, and use Catia engine

Other tools used:

magicavoxel

Ohad said we could look for voxel print in youtube link here

www.monolith.zone

the challenge is to make a 1000$ voxel printer

rutvij AR project Unity

Neil looks excited by AR and Unity. He recommands to take a look at three.js webVR

3dbear.io AR for kids

Class

Vinyle cutter is probably the most usefull, most ignore tool in our labs

laser lasersaur is a 1000$ diy laser cutter fablight 60k$ and so on

plasma are (torchmate) are fairly dangerous (but fun !)

water jets (omax, flow) 100k$ machines, wazer DIY (5k$)

hot wire cnc foam cutter diy (mt2m) wire edm 100k$ mtm dwedm

focus on vynile and laser

important week to be parametric becaus of material thickness

in freecad, sketcher workshop, make a squer with 2 slots (constrainted) see video edit number depending on thickness (extrusion) (but you can add a speadsheet)

fusion and sw are parametrics

in antimony use script for variables

for this week we need one of this parametric design tool

then we need to use CAM

each machine comes with its printer driver (neil is not a fan of them)

mods is aims to talk directly to the machine, could be used for vynile and laser, this is an open framework

vinyle cutter

with vinyle cutter we can make origami, cut copper to make circuit (see video)

application: todo: sticker for your labtop origami or kirigami shirtscircuits$see inventory budnick converting 3m #1 epoxy tape to make flexible circuit ** copper with conductive glue ** transfer sand glass (used as pochoir)

be carefull at the force used

see honghao deng (2017 sutend video)

assignment: Make anything on vinyle cutter

go to output class for multilayer vinyle cut circuits

laser

in fabmodule we can screen print halftone

group assignment: make a press fit using laser cutter

there are a lot of joints : look at joints.jpg (class) $a better design is to create a chamfer

\ / | | —-

chamfer is mucher easer to align

better than chamfer is a little bump ()

a bit better is flexible is a little bean that goes into the slot

even better pins joints

the clearance around the material

you can make things that bend (called curfing) flexures

TODO: 2dof motion platform see 56836505.pdf

extension inkscape “living hinge creator”

laser is ligt amplification

CO² laser has a gain medium at 10.6µ fiber at 1µ (fiber laser car engrave pcb)

when you use a laser, the material is going somewhere and you need to aware of where goes the material. The air flow is really important ! no smoke inside the machine.

If you smell your laser cutter output, you breath chemical, you have to wait

kerf ?? you need to define offset to press fit

Safety

the Y belt broke, the spot put the machine in fire, and then the building.

You can never turn your back to the laser cutter.

Materials

cardboard is great

if it kinks, it’s bad for laser if it bump (heavy) it’s ok

heavy duty pads are great

50w laser cutter is enough to cut 3m plywod cutting acrylic is popular (but not recyclable) acrylic is easy to heat and bend (heater wire)

see laser origami stefanie Mueller (youtube)

derlin acetal homopolymer

pc is bad pvc is really bad ()

** don’t laser cut random plastic **

** never put anything shiny **

if the lens is dirty, the lens can explode, you need to keep it clean

group assignment: do some tests on laser cutter, and document them mesure the beam of the laser

anodised aluminium is

ferdi talks about a dot peeking project