There welding is terrible and have found metal filler in some of the seems. The ATC smashes into the spindle, we fixed this by applying a chamfer to the tool holder but it still nicks every now and then. We have found bolts glued into holes that were stripped so instead of fixing it they just hotmelt glued the bolts into place. The gantry is built with two columns when we took the main part of the gantry off the columns we found the column "flat surface" were hand ground with an angle grinder so the gantry is fixed to two unleveled columns, pretty sure our Z-Axis is not sitting 90degrees.
We've made sure that motors are pressed up correctly to the rail and applied a temporary fix.
one of the Y-axis motors jumps a tooth, we had a look and found that the cog/sprocket is only 45% on the rail we find that if we use the full extent of the bed it jumps a tooth shifting the gantry on one side causing it to become skew. So we did and while dissembling it we found out how shoddy their work is:
We contact support and told them about the X-axis being skew, the homing being off, and the ATC seems to smashing tools into the holder (We lost 2 bits this way), as well as the spindle smashing into the ATC, they told us to stop complaining and fix it ourselves. I turned the machine off and tried again the next day, I ran the same program again by accident and to my disbelief it cut the same line again but this time it cut 1mm-2mm more along in the direction of the Y-axis's.Įvery time the machine is turned off it homes, but the homing mechanism is a piece of L -metal that a sensor passes to find home it does it a few times until it finds an average point then sets that as home, its different every time you start the machine so no chance on working on yesterdays piece unless you can accurately find the edge again I have another CNC that homes and never have to worry about the homing function and its older than the new one. When I drew a line with a ruler and compared it to the cut the line it starts off at 0mm and by the end of the cut its 5mm off. The gantry is off by 5mm along the X-axis. I thought maybe the MDF shifted or wasn't straight checked again and yep it was straight and hadn't moved. The line was skew along the X-axis, I double checked my line on Fusion 360 and it was straight. I put a MDF board on the CNC and cut a line from left to right and front to back. We received our CNC on time, unpacked it and set it up all was fine until I decided to check accuracy. They do have syntec controller as an option.īefore you buy an OMNI CNC read the below then decide.
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