For cutting wire i had some Rene 41 27g wire on hand. I grabbed some angled aluminium from Ace hardware ($16) and some rivets and made the one seen above. Although in hindsight you can hear the nema motors when they are on, but it looks cool.Ī cutting bow does not come with the setup, but this is a very easy thing to make. Also, as i have a problem with leaving things on, i added a voltmeter to not only display the voltage going to the arduino but it also acts as an "on" light for me. You have a good 4.5 inches of space under the mdf to hide all the messy bits. This brings up a very nice feature of the table. I had an adjustable power supply on hand and made a little project box out of some scrap #wewd. Martin has a very convenient drill template to assist with placing the holes. And than depending on how much time you take, getting the 40x40 piece of mdf square with the two towers can take some time. So lots of soldering extensions onto the cables. The longest part, and he is looking into how to remove this step, was extending all the stepper motor wires as the length cannot make the 40" of travel. It took longer than that to get it up in working, probably 3 or 4 evenings. Now this is building the 2 complete towers. As i said back to martin, i think if i had to build this again i could do it in under an hour. But having said that, the build was very, very, very simple in comparison. I have also built a 3d printer from a kit. Now, as i stated i have built a 4 axis kit from scratch using mdf and drawer slides, so this isnt my first time and i do know how everything "should" function. I will explain why i dont use them often later. Although i find i am not using them daily, the kit does come with 4 limit switches. The controller is Arduino based with a cnc shield and the motors are Nema17's. The rails are extruded aluminium and the connecting pieces are 3d printed parts with metric hardware. A few weeks later i received the v1 kit from him and the electronics i needed from amazon. So I was very excited to try out a manufactured kit. I have built my own hot wire cutter out of MDF and drawer slides and even before that i was manually cutting wings using fishing wire and aluminum flashing templates. Now i have had an interest in hot-wire cutting foam for probably 7 years, ever since i first watched some of Andrew Newton's videos on YouTube. So a few months back Martin, a fellow Hobbyist local to the Bay Area, asked if i would be interested in helping him beta test a hot wire cnc kit he was developing.
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March 2023
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