hello friends, this is my first furniture that i make with my smw3d machine, the joints were incredibly tight, just want to ask for your help for the woodworkers, what is your experience with the feed rates for plywood, i use a 1/8 2 flute end mill, with 300 mm/min and a spindle with 10 rpm, each pass the machine was cutting 0.5 mm, the plywood was 12 mm thick. the edge finish was very neat, but it took a long while to do it, i feel the machine can work much faster, but i dont want to explode. Cheers guys
I’m far from an expert, but that seems very slow.
Last night I was running 660mm/min 1.8mm depth passes on MDF with a 1/8 single flute end mill. This is very conservative speeds and I could have easily increased the depth to between 2.5mm & 3mm without risk in hindsight. And I’m using a brushless 400w spindle, not a Makita or Bosche trim router.
Referencing this shapeoko page people seem to be going much faster and deeper with a smaller machine: http://www.shapeoko.com/wiki/index.php/Materials#Plywood
I would increase feed rate first, then depth of cut. Slow feed rates will increase friction & tool temperature, it also starts to risk starting a fire!
BTW what spindle and driver/controller are you using and how have you set the current limit on the controller? I had issues with my current limits set way too low.
You get go a lot faster than that. That’s about the speed I cut aluminum.
Double your feed rate (600/min) and your z depth (1mm/pass). This will still be too slow, but it gives you a better starting point.
When I have done wood lately, I have been using 1/8" endmill, 1200mm/min and z depth per pass at 2mm . Good luck.
3200mm/min at 4mm DOC
@Julius_Jahn
That’s way too fast for most people’s machines
@Felipe_de_la_jara an absolutely beautiful build sir!! You are a true artist!
thanks a lot guys, im using a 400 w spindle with a pwm circuit board. this is just a test, now i going for the first production, when im done, i show you the results,
cheers,
@Felipe_de_la_jara
That is an awesome project. I have been looking for a project to get into cutting some wood joints. I might have to try making something like this. Good job
@Mark_Leino are you sure? With a 5mm pitch screw it’s totally possible with the open stores nema 23s. 5m/min is the max speed
@Julius_Jahn can you please create a video of your machine cutting pine at the specified feeds and feeds. It might be great to see as a learning lesson. Noted you dropped these on the feeds and speeds charts a while back.
Maybe tomorrow, if im in the shop. I work full time now somewhere else and rarely have the energy after work to do much.
@Julius_Jahn look forward to it.
Friday is off for Rememberance. Will do it then.
Cut today. Video is uploading. I got 5000mm/min at 4mm easily
@Julius_Jahn Well touche. I haven’t gone that fast or felt the need to. Just seems to me it dangerous, I have things go wrong all the time at half that speed, and usually projects are salvageable.
I will also say that before I really got involved in Google+, my ox wouldn’t go that fast accurately. It would start missing steps, and the stock z axis would twist so much deep cuts would get deeper and deeper.
I really got into modding the ox when I took on a job cutting aluminum (stupid idea with stock ox). Immediately I realized that to finish the job, things had to change.
What mods have you done? I see lead screws, your custom z plate to stiffen c beam ( I will get around to that one of these days).
Things will go wrong at every speed, it doesn’t matter. That’s something you should solve first anyways 
Ballscrews
Extra Y plates
Polycarb wheels
48V psu
TB6600 drivers
Z plate
X axis bolted together
@Julius_Jahn I’m amazed at how much bolting x axis together helps, it should definitely be a first mod-on any machine with multiple layers of x beam. Lead screws got me round holes instead of slightly oblong ones.
It didn’t do that much on mine. I use 3 2080s for 1000mm
I think the 2080 is the real secret, I’m really liking using c beam lately.