large_format_laser_cutter VS Ultra-low-field-MRI-Scanner

The concept works but in my case the gantry gets a bit sticky and I lose steps, so it needs to be refined. However I have basically abandoned the project. I would love for people to use it as inspiration for future versions:

https://github.com/tlalexander/large_format_laser_cutter

I never finished making the youtube video for it, but I have a partially completed video that lacks a voiceover or proper edits for the second half.

However it shows the operation of the system and offers some additional detail:

https://github.com/tlalexander/large_format_laser_cutter/iss...

I guess this is a good place to share my open source large format laser cutter design for sewing projects. It’s cheap to make, works pretty well, and the whole gantry assembly slides right off leaving just a sheet of plywood with low profile 3D printed rails on the sides. So I throw my rug over it and it becomes my floor when not in use. Important because the laser cutter can cut a full 60” wide piece of fabric two yards long. It’s basically 5 foot by 6 foot, and I don’t have space in my apartment for a dedicated machine that takes up all that space. But since this doubles as my floor it works great! Also includes a raspberry pi camera on the laser head which serves as a pattern scanner. I really want to finish my video on this thing, I’ve just been busy. But please take a look and considering building it! If you have any questions open a GitHub issue and I will do everything I can to help. I think it’s a great starting point (designed in three weeks) and I’d LOVE for other people to reproduce it and extend the design! The machine has a few hiccups but I use it all the time for my sewing projects and it is SO nice to get all the cutting done repeatably and automatically. You can even scan existing clothes often without disassembly and turn those in to digital patterns!

https://github.com/tlalexander/large_format_laser_cutter

I obsess over this concept. I am a robotics engineer and my dream is local manufacturing with small DIY machines. But it's a lot of work! When I have a little more time I want to teach community robotics classes and build machines that makes shoes and hot food and other important goods, designed and built as a community. I designed a cheap large format laser cutter [1][2] and now I am designing shoes that can be made with a 3D printer, the laser cutter, a sewing machine, and some basic tools. [3]

[1] https://twitter.com/TLAlexander/status/1480332181285212160

[2] https://github.com/tlalexander/large_format_laser_cutter

[3] https://twitter.com/TLAlexander/status/1489519692712538113

The only Matlab file seems to just be be ~30 lines of code for reading HDF5 files and plotting some results, nothing too complicated or critical: https://github.com/bispmri/Ultra-low-field-MRI-Scanner/blob/...

It looks like the bulk of the code for training the EMI elimination model is is pretty straightforward PyTorch.