Just did it. Same results. Using a 1/4" S1R CNC square down cut bit…bottomed out in the router with 1 1/8" sticking out.
A fairly common problem seems to be the stability of the connectors for the stepper controls. If it looks like this happens in one dimension only, I’d check the connectors. With the crimped Amphenol connector, the pins are not always properly seated. That could result in an intermittent connection based on vibrations. I had a problem that was much more severe than this but I can see how it could be the same root problem.
FWIW the problem you’re seeing may also be a result of the gcode. If you know that the bit is orthogonal to the machine surface you should have no “steps” on the vertically milled faces.
I have the router trammed as close as I could get it using basic tools. I made a bar with an old bit on one end and another at the other end and used this to tram front to back and side to side. When I first cut the waste board I could really feel the ridges. After tramming I can barely feel them and in most spots none at all.
When I first unboxed the machine and during set up I noticed the left side y rail was very “hard” to move back compared to the right side. Just assumed this was normal. I did notice on my titghening up of everything that the cable mount…which appears to be 3d printed …for the z axis was cracked.
The last cut I did just minutes ago I stood in front of the machine with my fingers riding in front of both y axis…one on either side …and you can totally feel the left side axis “bind up” as it travels from front to back and vice versa.
I’ve been messing with this all day long to no avail. If I have time after I get some real work done in the shop today I will disconnect all of the wires and check for any bad or loose connectors.
If this was any other machine I would have drove over it with the forklift by now. Very frustrating.
I could increase the offset on separate last pass…again…but that does not address the main issue with the axis slipping which is equally concerning to me as is the ridges.
By the way I have a custom built steel table with a double layer of 3/4 mdf…as well as a double layer spoil of 3/4 mdf resting and all bolted down to a framework of 2x1 steel spaced 12" OC so I seriously doubt this has anything to do with table design.
take the x axis off the machine and jog the y’s all the way back and all the way forward. see if both sides travel the same.
Ok. So before I begin I wanted to address’s one thing. I took delivery if this machine 2nd week of December. I was an invoiced order after the first preorder closed.
Most parts on my machine are 3d printed. The reason I am saying this is I thought the later production machines of the first preorder were injection molded. I don’t like that. And maybe I am misinformed.
As suggested I took the x axis off just minutes ago and tried jogging the machine along the y. I will upload a couple videos showing this. Right out of the gate the left y axis wouldn’t even move. The right one would…for awhile…then it would just stop at random. Then the left one would begin but for the most part no movement. When using my hand to move them both the right one is smooth to push down the axis and the left one I have to force it to move as can be seen in the video.
After this brief yest decided to use a flashlight and inspect the electrical connections. The only thing I noticed was on the left rail the bottom left pin is severely recessed and bent sideways. When I assembled this machine I was very careful when inserting the plug connectors. So I am of the opinion I didn’t do this. I tried to pull the pin and bend it back but is is so bent and so retracted that I feel if I try to force it it will break.
That’s when I noticed 3 d printed mounting brackets which is another issue. Those should be milled out of aluminum or molded since they are the anchor point got the machine.
I have no idea if this is the place to address these issues. If not I will email customer support. I am not happy and one of the main reasons I decided to buy this was the apparent superior strength to others and the overall plug and play ability o the machine.
So…what next? New parts sent out? Send the machine back and get a new one sent out?
Update to the above mentioned parts beIN 3d printed. My mistake…they aren’t…the plugs that hold the wire ends are but not the actual mounts. So I apologize for bringing that up.
I haven’t read this entire thread, but has anyone mentioned to check the nuts at the ends of the X & Y ball screws to ensure they’re all snug? As well as the M5 bolts that hold the ball nuts in place.
Contact support@onefinitycnc.com and we’ll send out a new wire.
As for 3D printed parts, no structural part of the machine has ever been 3D printed. Most parts that were (touch screen arm, etc.) have been changed to injection molded. The wire caps are the only part left that is 3D printed.