Woodworker 35 left side dragging

[timmy19 (Tim)]

my machine seems to be dragging(stuttering) on left side after moving 6 to seven inches from very front of machine homing position after that it goes the full 32 inches smoothly

[Woodpecker]

Not a lot of details?

[timmy19 (Tim)]

video

[OnefinityCNC (Onefinity Support)]

My guess from the video is that only one of your Y rails is moving (also looks like your machine is WAY past the ‘clean and maintaince’ stage

Go through each step in this FAQ:

Troubleshooting: Rail is getting hung, stuck, grinding, or moving in opposite direction

Rail is getting hung/stuck/grinding. Special notes to read before following each step: A rail getting stuck/hung is typically one of two things, either a wire/connection issue or the grub screw on the ball screw isn’t tight on the side that isn’t moving. One thing to remember, stall homing adjustments do NOT affect rail movement during cutting or jogging. If the rail isn’t moving correctly during cutting or jogging, incorrect stall homing is an affect of this greater issue. Any time the axis …

[Aiph5u (Aiph5u (not affiliated with Onefinity))]

Hey Tim,

have you ensured your machine is already adjusted for rectangularity and coplanarity? If it is not, your Y axes may block or have “hiccups”.

@Aiph5u

a gantry-type CNC machine can be twisted. This is usually the case after setting it up. In this case all your workpieces, including the flattened wasteboard will be twisted. Therefore such a machine needs to be adjusted for coplanarity. The QCW frame offers the Any Surface Leveling Feet. But you can also use heigt-adjusted feet or casters. In this case if you move the table around, it is necessary to repeat the check and adjustment of coplanarity each time you moved it. The fishing line test is useful for checking coplanarity.

Also a CNC machine needs to be adjusted for rectangularity (“squaring”). In the case rectangularity is not adjusted, the machine is no rectangle but a parallelogram. As the result all your workpieces intended to come out as rectangles will be parallelograms, i.e. will have no right angles. Also tiling (working on a larger workpiece part by part) or double side milling (reversing the workpiece to mill the underside) will not allow to get matching results.

Furthermore, on a machine with no accurately adjusted coplanarity and rectangularity, the Y movement can block, or have “hiccups” or loose its position reference coordinates.

I would consider a machine ready to use only if you first checked and ensured that it is

1. rectangular (“squared”) (bar gauge) and 2. coplanar (“not twisted”) (fishing line method)

Only then I would proceed with

[timmy19 (Tim)]

I have had this machine for years and carved many projects with a few problems caused by me! so come to find out I was having problems with my probe the wire has come off the spring twice now and when I was messing with the connector it came lose enough to stop the left motor completely so the motor on right was driving everything. I followed first step of troubleshooting removing the x completely from the y and z rail and saw that only one motor was running.the new probe is 17 dollars but they want 20 dollars to ship so I guess I will solder again or just put an alligator clip on it