This is probably the first metal cutting with the temporary plates only. Very exciting?
I’m not that experienced with metal. But my first guess is that the chips are getting fused to the work because they are getting recut.
Two things I would try are: 1) Add a finishing pass in CAM. That will just bring the but around again to clean off the chips. 2) Add an air assist. You can try it manually for an inch and if it works to keep the chips away, then try to find a way to add it to the machine. Jist some direct air on the bit yo push chips away from the cutter as they come off.
But metal is a bit of a mystery to me. Maybe someone else will tell you if you need to go slower, faster, deeper, shallower.
Guessing Aluminum from topic title, if using strong steppers like the Nema17 76oz one’s V1E sells in the LR3 kit, consider leaving the front Strut solid, save on cut and cleanup time without adding much weight. Personally like look of a solid front grill. a solid diamond panel for front grill would look slick. For easier life, recommend assembling struts in sequence… bottom, front, then rear.
Used the following settings with a 1 flute bit came out pretty Clean… I assume people are doing all 3 struts ?.. Just Realized Going to be 2 gantry Braces short at 65" it calls for 10 and I only have 8 Guess I am going to have to fix 1 off my 3D printers pretty quick
P.S. I like the Idea of a solid Plate on the front Behind X Belt
Engraved logo, name, measurement markers and no cut zones on my front Strut, details in my build topic. Not sure if engraving patterns is what you’d want for yours though, that might ruin the purity of your diamonds
I am kind of at a stand still until I either get 1 of my 3D printers fixed or order 2 more Gantry Braces from Ryan I ordered all my 3D printed parts. I Wore out my 3d printers making Face shields and Ear savers during Covid-19 for all my fellow EMT,s and Hospital works round the clock my Gantry is 65" looks like it takes 10 Braces only came with 8
Yes 3/4 EMT yes 1760 Fairview Rd. N Chatham VA. 24531 … Yes I am Volunteer Fire Fighter & EMT I will be happy to paypal you the money for the Prints and shipping…
Lowerd to 300mm/min slowed the router way down to about 2 that stopped the Aluminum from gumming up the bit and gave me nice clean cuts also used a single flute bit
Yes sir… but keep in mind it was a very soft aluminum… made to be trim on sheds was only 2mm thick I found if I moved to slow the bit would heat the aluminum and stick to bit clocking flute… I ruined server pieces before settling on that speed also had to turn dewalt router down about 2 to help keep cool. Tried using WD 40 that was available but did not seam to help other making chips stick to everything
Ethanol is good for aluminum milling. Makes cuts really clean by cooling and lubricating. And it evaporates easily so it doesn’t leave a mess. Of course it smells quite a bit, but whether that is a pro or a con depends on the operator.
Almost thier just wish I would have rembered to put Z axis. On the gantry before I put the ends on. Waiting on new enclosure big enough for my Rambo board and PI 4 also going to use aviation abulk head plugs
The fire hazard Marvin mentioned is good to keep in mind even though aluminum rarely sparks. I’ve used 96% stuff myself (cheap bio-ethanol sold as anti-freeze), but I’ve also seen a recommendation to dilute to below 50% for less flammable solution.
