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If you intend on using and arduino or a raspberry to control the lengths it could be awesome to ditch the usb part and be able to use some kind of web interface (hosted on the controller) and access it via wifi, so you can configure all your cuts on a computer or even from a smartphone.
To reduce the fumes you should set a temperature not too high, that melt but not burn the nylon. The temperature will drop each time you cut something and you'll need some kind of filtering on your temperature sensor values to prevent overshoot since your blade will have some thermal inertia.
Also you would need some guides to prevent the webbing (or anything) to go sideways, and if the feed rate is rather high and your roll is on a stand you'll need to limit the rotation of the roll or your webbing will continue to unroll.
I had a chance to look at my Sheffield webbing cutter and the heat is set to 600 degrees C which works great for webbing, including 2 Scuba.
One thing I noticed is that there is a spring loaded hold down bar that comes down first to hold the webbing, then releases after the cut. I think it keeps the webbing from sticking to the blade.
thumb up for this project. Is something that I was also thinking to do, I talked a lot of times with Fouinard about it.I was thinking to use bluetooth instead of wifi or usb but once that the machine is done is easy to adjust it. My biggest problem was to create the support for the blade, now I have the 3d printer and this would be easier. If you need help you can ask for coding and some electronic, I felt in love for Arduino some time ago and I pretty good with it.I can assure you that a an Arduino Uno r3 has enough ram to do everything this machine needs to do. You can't believe how incredible are 2kb of ram if well used.Are you going to release it open source / hardware?
Im out of the shop this week, but as I recall the hold down bar is located between the blade and the drive roller.One more thing to consider is an auto retract function that pulls the webbing back, away from the heat of the blade after a batch cut. This keeps the webbing from melting while parked between batches.Scott
I have been watching this article with interest ,at present I am cutting 2 inch straps by the hundred and it tedious.I also just bought a cheapo Chinese laser cutter ( to learn with ) when setting it up I cut through a 40 mm piece of webbing and it cut it quick and nice ( and square ) would it be possible to make a strap cutter using one of these machines .The y axis to cut across and the x Axis to run the feed rollers
Quote from: @less@ndro on October 22, 2018, 11:18:13 PMthumb up for this project. Is something that I was also thinking to do, I talked a lot of times with Fouinard about it.I was thinking to use bluetooth instead of wifi or usb but once that the machine is done is easy to adjust it. My biggest problem was to create the support for the blade, now I have the 3d printer and this would be easier. If you need help you can ask for coding and some electronic, I felt in love for Arduino some time ago and I pretty good with it.I can assure you that a an Arduino Uno r3 has enough ram to do everything this machine needs to do. You can't believe how incredible are 2kb of ram if well used.Are you going to release it open source / hardware?currently i am using an Atmega8 chip for the blade temperature control (will scale down once i decide which thermocouple to use, Thinking ATtiny85 or ATtiny10 if i can minimize the circuit a little more) and an Atmega328P chip as the main brain, i think that chip is what is in the arduino uno and nano, i won't be using the arduino ide as it has a few limitations that using the Atmel IDE doesn't.still unsure if i will have the time to add wifi but personally i think wifi would be more beneficial than Bluetooth as it means a computer could also have software to interact Depending on how my test results i may release it but will happily help you out if you need a hand on any design elements, my university has talked about possibly patenting a element of the system so unfortunately i wouldn't be allowed to give out that element as they will own the patent (god damn university), thanks for the input @less@ndroQuote from: SunriseTacticalGear on October 18, 2018, 05:39:19 PMIm out of the shop this week, but as I recall the hold down bar is located between the blade and the drive roller.One more thing to consider is an auto retract function that pulls the webbing back, away from the heat of the blade after a batch cut. This keeps the webbing from melting while parked between batches.Scott Thanks man, and does the blade sit in the down position after a batch? would love to have a chat if you had the time