Working Laser Cutter Base

Here is a video of my working laser cutter CNC base. Enjoy!

Y Axis Movement

Updated software and Hardware

As promised here is a snip of the CAD model that I have created of the base of the laser cutter. This model only has 2 custom made parts that will be 3D printed. All of the other parts of the system can be purchased from either McMaster or Amazon. I have taken special care to source parts that are already to size, meaning I won't have to cut any metal. The square base is formed with 80-20 beams. the cross beam rests on two metal dowels.

I have an exploded view drawing, but it didn't end up being super useful. Here is a copy of the bill of materials (for the body)

My next area of focus is to create a file reader. 

I can control steppers on the PI!

Dear blog followers,

Sorry I haven't been keeping up with the blog. I will use this post to catch you up on the last few weeks.

 Much progress has been made on the laser cutter. I have acquired the Raspberry PI that I will be using to govern the hardware, and the stepper motors and stepper drivers. I will discuss the BOM of parts here and later present the CAD model.

Here are the parts that I have sourced: 

Coupler:

https://www.amazon.com/LGDehome-Coupling-Coupler-Alumlnum-Casing/dp/B072LRBBM7/ref=sr_1_1_sspa?s=industrial&ie=UTF8&qid=1519147729&sr=1-1-spons&keywords=5mm+to+8mm+coupler&psc=1

Shaft:

https://www.amazon.com/gp/product/B002BBF9SY/ref=ox_sc_sfl_title_1?ie=UTF8&psc=1&smid=AFLT987H7WA7G

Pulley:

https://www.amazon.com/dp/B071W6CHN9/ref=sspa_dk_detail_4?psc=1&pd_rd_i=B071W6CHN9&pd_rd_wg=p6Yzx&pd_rd_r=H3ZJFG8EV1T66DHHSHKE&pd_rd_w=cy9KL

Timing Belt:

https://www.amazon.com/SCStyle-Meters-Pitch-Timing-Printer/dp/B076LQMD9L/ref=sr_1_1?s=industrial&ie=UTF8&qid=1519148520&sr=1-1&keywords=6mm+timing+belt

Stepper Mount:

https://www.amazon.com/Stepper-Motor-Mounting-Bracket-Screws/dp/B073R2NR3W/ref=sr_1_1?s=industrial&ie=UTF8&qid=1519148875&sr=1-1&keywords=nema+17+motor+mount

Steppers:

https://www.pololu.com/product/2267/specs

Drivers:

https://www.pololu.com/product/2133

I am still waiting on my tax return to purchase the rest of the parts. There are some McMaster parts that I need to order as well, specifically 80-20 beams and connectors to join them together. 

Here is a basic timeline delineating when I plan on accomplishing certain goals. The Laser Cutter will have an aluminum frame that can be disassembled. The Cross Bar will be driven with Timing belts and pulleys attached to stepper motors.

Week		Milestone
1/29/2018		Purchase Steppers, Raspberry PI, Belts, Pulleys
2/4/2018		Create Model of the Base, Purchase other materials
2/10/2018		Fabricate Base
2/16/2018		Preform Calculations of Steps, Motors, Power, Etc
2/22/2018		PCB Layout and design. Print PCB
2/28/2018		Begin GUI design
3/6/2018		GUI design- vector
3/12/2018		GUI design- image
3/18/2018		Test Functionality of base/ code
3/24/2018		Refine System- Base (ADD LASER MAYBE)
3/30/2018		Refine System- Code/ Speed
4/5/2018		Refine System- Aesthetics
4/11/2018		Prepare Presentation