# Community Support **URL:** https://forum.sienci.com/c/support/8.md?page=3 [Latest](https://forum.sienci.com/latest.md) · [Categories](https://forum.sienci.com/categories.md) **Page:** 4 --- ## [When starting a toolpath, can I change the order of axis movement?](https://forum.sienci.com/t/when-starting-a-toolpath-can-i-change-the-order-of-axis-movement/26564)
**Author:** [@4thbboy](https://forum.sienci.com/u/4thbboy)\ **Replies:** 1\ **Last updated:** [June 13, 2026, 12:59pm UTC](https://forum.sienci.com/t/when-starting-a-toolpath-can-i-change-the-order-of-axis-movement/26564 "2026-06-13T12:59:28Z")
So I have a Rowdy Roman Swinger dust boot. The way I have it mounted, I come dangerously close to smashing into the left drive chain at toolpath start. When I start a tool path the z axis drops then the gantry moves to p… --- ## [Replacing Y-Axis Linear Bearings](https://forum.sienci.com/t/replacing-y-axis-linear-bearings/26562)
**Author:** [@mrf2004](https://forum.sienci.com/u/mrf2004)\ **Replies:** 0\ **Last updated:** [June 12, 2026, 7:42pm UTC](https://forum.sienci.com/t/replacing-y-axis-linear-bearings/26562 "2026-06-12T19:42:35Z")
Hi all, I’m about to replace the linear bearings on the left Y-axis gantry of my AltMill 4x4 (the ball bearings have fallen out of one or both). Any tips/tricks for a smooth installation? Is it better to remove the exis… --- ## [ATC worked great until it did not](https://forum.sienci.com/t/atc-worked-great-until-it-did-not/26549)
**Author:** [@beerbarrel](https://forum.sienci.com/u/beerbarrel)\ **Replies:** 23\ **Last updated:** [June 12, 2026, 2:17pm UTC](https://forum.sienci.com/t/atc-worked-great-until-it-did-not/26549 "2026-06-12T14:17:33Z")
Finally finished ATC install. It went great for a few minutes. I loaded 3 tools, probed them al, played around with changing them out…no issues. I ran the spindle break in procedure and let it run. After it was done, I n… --- ## [After update gsender won’t work](https://forum.sienci.com/t/after-update-gsender-won-t-work/26464)
**Author:** [@scottwhisler](https://forum.sienci.com/u/scottwhisler)\ **Replies:** 4\ **Last updated:** [June 9, 2026, 4:57pm UTC](https://forum.sienci.com/t/after-update-gsender-won-t-work/26464 "2026-06-09T16:57:09Z")
Hello all, Gsender updated automatically when I turned it on recently, and now won’t open/start. It just displays the spaceship/logo square in the middle of the screen and I can’t seem to find an answer. anyone had th… --- ## [Need a little help](https://forum.sienci.com/t/need-a-little-help/26529)
**Author:** [@Blink](https://forum.sienci.com/u/Blink)\ **Replies:** 5\ **Last updated:** [June 9, 2026, 4:47pm UTC](https://forum.sienci.com/t/need-a-little-help/26529 "2026-06-09T16:47:06Z")
Just assembled my Altmill 2x4. Turned everything on. My Gsender computer says disconnected at the top? Have a feeling this may first of a few questions. Thanks in advance Bill --- ## [Stepper motors ‘hissing’](https://forum.sienci.com/t/stepper-motors-hissing/26539)
**Author:** [@guy559](https://forum.sienci.com/u/guy559)\ **Replies:** 7\ **Last updated:** [June 8, 2026, 6:07pm UTC](https://forum.sienci.com/t/stepper-motors-hissing/26539 "2026-06-08T18:07:29Z")
New AltMill 2x4 user here. Assembly went well overall and machine operates as expected so far. Still dialing in some things as I schedule around travel. Only oddity so far is the hissing coming from the Mk2’s closed-loo… --- ## [Rookie Mistake … just broke my first bit](https://forum.sienci.com/t/rookie-mistake-just-broke-my-first-bit/26535)
**Author:** [@DPofFB](https://forum.sienci.com/u/DPofFB)\ **Replies:** 2\ **Last updated:** [June 8, 2026, 2:13am UTC](https://forum.sienci.com/t/rookie-mistake-just-broke-my-first-bit/26535 "2026-06-08T02:13:42Z")
Maybe another rookie will read this and avoid my mistake. Altmill 4x4 is assembled and all seems to be working fine. I’ve surfaced my spoilboard and cut out a test project by manually zeroing. I updated to gSender 1.6.… --- ## [Basics of coordinates and origin?](https://forum.sienci.com/t/basics-of-coordinates-and-origin/26507)
**Author:** [@DavidB](https://forum.sienci.com/u/DavidB)\ **Replies:** 32\ **Last updated:** [June 5, 2026, 5:18pm UTC](https://forum.sienci.com/t/basics-of-coordinates-and-origin/26507 "2026-06-05T17:18:51Z")
Having never really used CAD software before I’ve gotten to the point where I have a hole that is bored out and simulated the tool path in Fusion 360. The hole is for the wasteboard. What I can’t quite understand is … --- ## [What’s the difference between hard and soft stops?](https://forum.sienci.com/t/what-s-the-difference-between-hard-and-soft-stops/26525)
**Author:** [@DPofFB](https://forum.sienci.com/u/DPofFB)\ **Replies:** 6\ **Last updated:** [June 5, 2026, 2:20pm UTC](https://forum.sienci.com/t/what-s-the-difference-between-hard-and-soft-stops/26525 "2026-06-05T14:20:09Z")
Another new Altmill 4x4 owner so forgive my ignorance. I’ve completed the assembly and have managed to get to the point of moving and navigating in GSender using the Sienci computer. I was even able to manually spot mark… --- ## [Altmill parts specs](https://forum.sienci.com/t/altmill-parts-specs/26523)
**Author:** [@wiremonkey](https://forum.sienci.com/u/wiremonkey)\ **Replies:** 0\ **Last updated:** [June 4, 2026, 8:21pm UTC](https://forum.sienci.com/t/altmill-parts-specs/26523 "2026-06-04T20:21:35Z")
Hey folks, I think I need a new X axis ball nut, it sounds a bit crunchy when it rapids. I’ve kept it well greased, but maybe some grit got in there? I’m hoping the screw itself is OK. So, is there a place anywhere on t… --- ## [Tramming question using eccentrics provided](https://forum.sienci.com/t/tramming-question-using-eccentrics-provided/21398)
**Author:** [@beerbarrel](https://forum.sienci.com/u/beerbarrel)\ **Replies:** 22\ **Last updated:** [June 4, 2026, 6:36am UTC](https://forum.sienci.com/t/tramming-question-using-eccentrics-provided/21398 "2026-06-04T06:36:57Z")
Just got around to getting the bed and waste board done. I built a tramming apparatus out of a short piece of aluminum T Track. Anyways, my tramming from side to side is off slightly. I looked over the instructions and s… --- ## [Altmill keep disconnecting from computer](https://forum.sienci.com/t/altmill-keep-disconnecting-from-computer/26337)
**Author:** [@GPeak](https://forum.sienci.com/u/GPeak)\ **Replies:** 14\ **Last updated:** [June 3, 2026, 9:39pm UTC](https://forum.sienci.com/t/altmill-keep-disconnecting-from-computer/26337 "2026-06-03T21:39:57Z")
Hi. My mill keeps disconnecting from my computer. It is connected via USB. Which ethernet cable will work? Is it a special one. I just have been reading that might be the problem. But, it is useless if I can’t run more t… --- ## [This can't just be me (Longmill 30x30 assembly)](https://forum.sienci.com/t/this-cant-just-be-me-longmill-30x30-assembly/26504)
**Author:** [@LarryCoon](https://forum.sienci.com/u/LarryCoon)\ **Replies:** 4\ **Last updated:** [June 3, 2026, 9:32pm UTC](https://forum.sienci.com/t/this-cant-just-be-me-longmill-30x30-assembly/26504 "2026-06-03T21:32:34Z")
I’m assembling my Longmill 30x30 today. It looks line one of my ACME nuts was manufactured incorrectly – the bolt is supposed to cut across the slot in the nut. One of my ACME nuts has the bolt on the opposite side of t… --- ## [New SLB same problem](https://forum.sienci.com/t/new-slb-same-problem/26479)
**Author:** [@PBA](https://forum.sienci.com/u/PBA)\ **Replies:** 6\ **Last updated:** [June 3, 2026, 3:43pm UTC](https://forum.sienci.com/t/new-slb-same-problem/26479 "2026-06-03T15:43:06Z")
I ordered a new SLB to save me some time and I thought maybe the first SLB would be repairable and I would build another machine someday. The new SLB is giving me the same fits. I received the new SLB last night. This mo… --- ## [Failure never fails to hit me...so frustrating](https://forum.sienci.com/t/failure-never-fails-to-hit-me-so-frustrating/26483)
**Author:** [@4thbboy](https://forum.sienci.com/u/4thbboy)\ **Replies:** 11\ **Last updated:** [June 3, 2026, 12:11pm UTC](https://forum.sienci.com/t/failure-never-fails-to-hit-me-so-frustrating/26483 "2026-06-03T12:11:30Z")
Updated to gSender 1.6.2. Now whatever job I run the spindle starts up, the VFD shuts off the controller. I went back to 1.6.1, still the same result. EVERY time I take one step forward, I fall backwards with this thing… --- ## [Issue with Autozero TouchPlate](https://forum.sienci.com/t/issue-with-autozero-touchplate/26100)
**Author:** [@Jimc137](https://forum.sienci.com/u/Jimc137)\ **Replies:** 28\ **Last updated:** [June 2, 2026, 8:45pm UTC](https://forum.sienci.com/t/issue-with-autozero-touchplate/26100 "2026-06-02T20:45:10Z")
I suddenly got a weird issue with my AutoZero touch plate and hope someone can help. I’m using gSender 1.5.7 with my Altmill. When I go to set “Z”, I place the touch plate on my stock, hit “Probe”, with it set to “Z” on… --- ## [Why E-stop location on side?](https://forum.sienci.com/t/why-e-stop-location-on-side/26503)
**Author:** [@DavidB](https://forum.sienci.com/u/DavidB)\ **Replies:** 2\ **Last updated:** [June 2, 2026, 6:35pm UTC](https://forum.sienci.com/t/why-e-stop-location-on-side/26503 "2026-06-02T18:35:47Z")
Every time you startup on my AltMill you have to press the e-stop (sometimes multiple times because I must not get it turned and released correctly). Its default location on the top left side of left table leg seems in… --- ## [E Stop Button Problem](https://forum.sienci.com/t/e-stop-button-problem/26491)
**Author:** [@HonestKnifeCo](https://forum.sienci.com/u/HonestKnifeCo)\ **Replies:** 10\ **Last updated:** [June 2, 2026, 1:30pm UTC](https://forum.sienci.com/t/e-stop-button-problem/26491 "2026-06-02T13:30:32Z")
Altmill 2x4 MK2 with SLB Superlongboard and Sienci 1.5KW Spindle, Gcontrol and Gsender. All working fine and suddenly in the middle of a job, I get an E stop error. When I restart and activate the E stop, I get a beep … --- ## [Fusion360 tool files and machine setup](https://forum.sienci.com/t/fusion360-tool-files-and-machine-setup/12600)
**Author:** [@Jens](https://forum.sienci.com/u/Jens)\ **Replies:** 19\ **Last updated:** [May 31, 2026, 2:36pm UTC](https://forum.sienci.com/t/fusion360-tool-files-and-machine-setup/12600 "2026-05-31T14:36:24Z")
In preparation for my CNC router journey, I have started to play with Fusion360’s CAM section. While I have used Fusion360 extensively for 3D printed projects, this is my first foray into the CAM side. Has anyone built … --- ## [Error 15 when jogging](https://forum.sienci.com/t/error-15-when-jogging/16948)
**Author:** [@Chrisp](https://forum.sienci.com/u/Chrisp)\ **Replies:** 12\ **Last updated:** [May 29, 2026, 8:49pm UTC](https://forum.sienci.com/t/error-15-when-jogging/16948 "2026-05-29T20:49:39Z")
I’m consistently getting an Error 15 when pressing the jog button while the soft limits are enabled. A single click works fine. This only happens when soft limits are enabled, even after homing. This happens on both gsen… --- ## [Altmill 2'x4' Spindal not turning](https://forum.sienci.com/t/altmill-2x4-spindal-not-turning/26477)
**Author:** [@Groucho194](https://forum.sienci.com/u/Groucho194)\ **Replies:** 6\ **Last updated:** [May 29, 2026, 8:37pm UTC](https://forum.sienci.com/t/altmill-2x4-spindal-not-turning/26477 "2026-05-29T20:37:28Z")
Have an Altmil2’x4’, G sender and Vetric. Ran a file yesterday. Shut everything down correctly. Restarted today. Same file hit run and everything worked but the spindle is not turning. Controller says ro.oo. What am I do… --- ## [GSender Z-probe goes up to endstop instead of probing downward](https://forum.sienci.com/t/gsender-z-probe-goes-up-to-endstop-instead-of-probing-downward/26459)
**Author:** [@Fonzie](https://forum.sienci.com/u/Fonzie)\ **Replies:** 2\ **Last updated:** [May 27, 2026, 1:14pm UTC](https://forum.sienci.com/t/gsender-z-probe-goes-up-to-endstop-instead-of-probing-downward/26459 "2026-05-27T13:14:06Z")
Good day, I’m trying to switch from UGS to GSender, but I’m having an issue with the Z-probe function. When I initiate probing in GSender, the Z-axis moves upward until it hits the endstop and then stops, instead of mov… --- ## [Machine Y axis noises](https://forum.sienci.com/t/machine-y-axis-noises/26426)
**Author:** [@Crazy8sCommando](https://forum.sienci.com/u/Crazy8sCommando)\ **Replies:** 7\ **Last updated:** [May 23, 2026, 5:44pm UTC](https://forum.sienci.com/t/machine-y-axis-noises/26426 "2026-05-23T17:44:47Z")
Now that I’m getting used to this thing running, I have a question about noises coming from axes movement. I’m noticing that my Y travel is loud compared to my X and Z movements, and I’m wondering if that’s common? I a… --- ## [No axis movement](https://forum.sienci.com/t/no-axis-movement/26430)
**Author:** [@PBA](https://forum.sienci.com/u/PBA)\ **Replies:** 5\ **Last updated:** [May 22, 2026, 2:23am UTC](https://forum.sienci.com/t/no-axis-movement/26430 "2026-05-22T02:23:36Z")
Good day all! Problem…I just bench tested, set up, and calibrated a 50:1 Chinese 4th axis rotary. Worked perfectly and was repeatable and accurate. I am using a JST 4 pin connector/pigtails as I have seen/heard others … --- ## [Altmill assembly question … linear bearings](https://forum.sienci.com/t/altmill-assembly-question-linear-bearings/26434)
**Author:** [@DPofFB](https://forum.sienci.com/u/DPofFB)\ **Replies:** 2\ **Last updated:** [May 20, 2026, 9:54pm UTC](https://forum.sienci.com/t/altmill-assembly-question-linear-bearings/26434 "2026-05-20T21:54:14Z")
Yesterday while beginning assembly of my 4x4 one of the linear bearings slid off the rail assembly. When it hit the floor I thought I heard what sounded like 2 pieces hit. One was obviously the bearing assembly. I was a… --- ## [SD card mounting issue](https://forum.sienci.com/t/sd-card-mounting-issue/26410)
**Author:** [@nifty](https://forum.sienci.com/u/nifty)\ **Replies:** 5\ **Last updated:** [May 18, 2026, 4:40am UTC](https://forum.sienci.com/t/sd-card-mounting-issue/26410 "2026-05-18T04:40:46Z")
I am trying to mount the SC card in the SLB controller and it refuses to work. I have run out of ideas and hope someone will have a suggestion/s I can try. So far I have:- the only card available locally is a 32g sandis… --- ## [Altmill Z Screw](https://forum.sienci.com/t/altmill-z-screw/26409)
**Author:** [@Keithleatherwood](https://forum.sienci.com/u/Keithleatherwood)\ **Replies:** 7\ **Last updated:** [May 16, 2026, 2:11am UTC](https://forum.sienci.com/t/altmill-z-screw/26409 "2026-05-16T02:11:54Z")
Well, my project material came loose during a vortex rotary carve. The material bent the Z axis screw on my Altmill 4x4 with spindle. Tried to order through Sienci but the photos won’t upload to the ticket. I sent in a … --- ## [ATC spindle mounting plate](https://forum.sienci.com/t/atc-spindle-mounting-plate/26378)
**Author:** [@beerbarrel](https://forum.sienci.com/u/beerbarrel)\ **Replies:** 9\ **Last updated:** [May 14, 2026, 2:53pm UTC](https://forum.sienci.com/t/atc-spindle-mounting-plate/26378 "2026-05-14T14:53:08Z")
Curious question…has anyone run into no hole under the slotted area for the ATC spindle plate? The directions to you to use either the 4 hole mounting method or the 6 hole mounting method. Looks like I have the newer gan… --- ## [Initial setup issues with speed and limits](https://forum.sienci.com/t/initial-setup-issues-with-speed-and-limits/26403)
**Author:** [@4thbboy](https://forum.sienci.com/u/4thbboy)\ **Replies:** 0\ **Last updated:** [May 13, 2026, 11:48pm UTC](https://forum.sienci.com/t/initial-setup-issues-with-speed-and-limits/26403 "2026-05-13T23:48:18Z")
I just got the Altmill Mk2. Been having a lot of issues with it. First thing I did, once I got everything powered on, was work on the spindle. I went with a PWN 80mm water cooled. Oh boy was that fun, but I expected that… --- ## [Bad vibrations Right side Y-Axis.](https://forum.sienci.com/t/bad-vibrations-right-side-y-axis/26379)
**Author:** [@kconley](https://forum.sienci.com/u/kconley)\ **Replies:** 6\ **Last updated:** [May 12, 2026, 1:11am UTC](https://forum.sienci.com/t/bad-vibrations-right-side-y-axis/26379 "2026-05-12T01:11:03Z")
Hello all! I just received my Altmill 4x4 this last week and got it set up and running over the weekend. I’ve had a few issues with the homing functions, etc. that I’ve worked my way through. Everything seemed to be wor… [Previous page](https://forum.sienci.com/c/support/8.md?page=2) [Next page](https://forum.sienci.com/c/support/8.md?page=4)