# 📄 General **URL:** https://forum.sienci.com/c/general/information/40.md?page=1 [Latest](https://forum.sienci.com/latest.md) · [Categories](https://forum.sienci.com/categories.md) **Page:** 2 --- ## [First waste board surface question](https://forum.sienci.com/t/first-waste-board-surface-question/27028)
**Author:** [@PoppaTim](https://forum.sienci.com/u/PoppaTim)\ **Replies:** 5\ **Last updated:** [September 1, 2026, 1:03pm UTC](https://forum.sienci.com/t/first-waste-board-surface-question/27028 "2026-09-01T13:03:54Z")
Ok so I got my spoil board mounted and am running the first surfacing cut. This Altmill is amazingly fast! Lots of MDF dust, but what the hey!! That’s what leaf blowers are for, right? Anyway, my question is I turned off… --- ## [Bellows for ball screw protection?](https://forum.sienci.com/t/bellows-for-ball-screw-protection/27022)
**Author:** [@DavidB](https://forum.sienci.com/u/DavidB)\ **Replies:** 1\ **Last updated:** [August 30, 2026, 9:57pm UTC](https://forum.sienci.com/t/bellows-for-ball-screw-protection/27022 "2026-08-30T21:57:49Z")
Anybody ever experiment will ball screw protection? It somewhat bothered me that the ball screws get coated in wood dust/chips and found out there is protection for ball screws in general in the form of “bellows”. Ma… --- ## [Where to find files for attaching the spoilboard](https://forum.sienci.com/t/where-to-find-files-for-attaching-the-spoilboard/27017)
**Author:** [@PoppaTim](https://forum.sienci.com/u/PoppaTim)\ **Replies:** 1\ **Last updated:** [August 30, 2026, 12:48pm UTC](https://forum.sienci.com/t/where-to-find-files-for-attaching-the-spoilboard/27017 "2026-08-30T12:48:20Z")
I’m trying to find some cut files to attach my spoil board to the table base. I have the MDF cut to the length and width that Sienci suggested. I have attached the T-track to the bed already but would like to use threade… --- ## [VFD and machine questions](https://forum.sienci.com/t/vfd-and-machine-questions/27013)
**Author:** [@PoppaTim](https://forum.sienci.com/u/PoppaTim)\ **Replies:** 1\ **Last updated:** [August 29, 2026, 8:33pm UTC](https://forum.sienci.com/t/vfd-and-machine-questions/27013 "2026-08-29T20:33:04Z")
Hello to all! Just got my Altmill 4x4 assembled and the spoil board is done. I just have to attach it along with the T-tracks and treaded inserts , then I can get to work! This is my first machine with a VFD and would li… --- ## [Blown board used a 36v power supply now won't turn on](https://forum.sienci.com/t/blown-board-used-a-36v-power-supply-now-wont-turn-on/26967)
**Author:** [@julian](https://forum.sienci.com/u/julian)\ **Replies:** 11\ **Last updated:** [August 28, 2026, 7:31am UTC](https://forum.sienci.com/t/blown-board-used-a-36v-power-supply-now-wont-turn-on/26967 "2026-08-28T07:31:29Z")
hi does any now if the std slb have a fuse that you can repair Julian in uk --- ## [AltMill MK2 2x4 3d STEP Model](https://forum.sienci.com/t/altmill-mk2-2x4-3d-step-model/26995)
**Author:** [@dmsheffield](https://forum.sienci.com/u/dmsheffield)\ **Replies:** 2\ **Last updated:** [August 27, 2026, 10:21pm UTC](https://forum.sienci.com/t/altmill-mk2-2x4-3d-step-model/26995 "2026-08-27T22:21:29Z")
Does anyone know if there is a step model for the AltMill MK2 2x4. I found the open source model for the 4x4, but would like details on the 2x4 to be able to place/mount a custom spoilboard. I’d also be interested if t… --- ## [CNC Control issues](https://forum.sienci.com/t/cnc-control-issues/26947)
**Author:** [@fennelljc](https://forum.sienci.com/u/fennelljc)\ **Replies:** 1\ **Last updated:** [August 19, 2026, 9:26pm UTC](https://forum.sienci.com/t/cnc-control-issues/26947 "2026-08-19T21:26:31Z")
Hi, I am having issues with gSender v 1.62 I am using VCarve Pro Genmitsu 4040 Also the CNC is behaving odd. When I run the simulator in vcarve pro the file works fine When I run the file in gSender I receive the e… --- ## [Marine baltic birch plywood](https://forum.sienci.com/t/marine-baltic-birch-plywood/26937)
**Author:** [@sylthecru](https://forum.sienci.com/u/sylthecru)\ **Replies:** 8\ **Last updated:** [August 19, 2026, 12:52am UTC](https://forum.sienci.com/t/marine-baltic-birch-plywood/26937 "2026-08-19T00:52:01Z")
Hello everyone, I am a new user here coming from a onefinity CNC. With my onefinity I build the torsion box using marine grade baltic birch and added screw inserts to make my waste board replaceable. Are there any down… --- ## [Balanced collet nuts](https://forum.sienci.com/t/balanced-collet-nuts/25026)
**Author:** [@Chucky\_ott](https://forum.sienci.com/u/Chucky_ott)\ **Replies:** 13\ **Last updated:** [August 18, 2026, 2:43pm UTC](https://forum.sienci.com/t/balanced-collet-nuts/25026 "2026-08-18T14:43:51Z")
How critical is it to have balanced collet nuts on spindles intended for woodworking? I alternate between 1/8", 1/4" and 1/2" mills quite frequently and was getting tired of removing the collet from the collet nut. So … --- ## [TLS If using spoilboard as z-zer0](https://forum.sienci.com/t/tls-if-using-spoilboard-as-z-zer0/26914)
**Author:** [@ChrisAtJohnsons](https://forum.sienci.com/u/ChrisAtJohnsons)\ **Replies:** 4\ **Last updated:** [August 16, 2026, 4:26pm UTC](https://forum.sienci.com/t/tls-if-using-spoilboard-as-z-zer0/26914 "2026-08-16T16:26:05Z")
If I keep G54 z-zero as the spoilboard can I use the TLS to set bit length when I change bits? --- ## [Altmill Monitor Arm Mount](https://forum.sienci.com/t/altmill-monitor-arm-mount/26920)
**Author:** [@Onezero](https://forum.sienci.com/u/Onezero)\ **Replies:** 1\ **Last updated:** [August 16, 2026, 4:10pm UTC](https://forum.sienci.com/t/altmill-monitor-arm-mount/26920 "2026-08-16T16:10:26Z")
So I mucked up when I ordered my AltMill and didn’t snag the monitor arm mount that goes on the end of the rail. I’m looking for how everyone who didn’t get that mount has mounted arms for their monitors. I could mount… --- ## [Upgrading from a Shapeoko 3](https://forum.sienci.com/t/upgrading-from-a-shapeoko-3/26806)
**Author:** [@jabberwocky](https://forum.sienci.com/u/jabberwocky)\ **Replies:** 4\ **Last updated:** [August 14, 2026, 1:59pm UTC](https://forum.sienci.com/t/upgrading-from-a-shapeoko-3/26806 "2026-08-14T13:59:54Z")
New member, just purchased an Altmill 4x4 with the 220v spindle. I’ve been running a Shapeoko 3 XXL since 2016, when I lived in a townhouse and used the finished basement rec room as a shop. Moved to a house in 2018 an… --- ## [GControl Alternative](https://forum.sienci.com/t/gcontrol-alternative/26900)
**Author:** [@jagfan](https://forum.sienci.com/u/jagfan)\ **Replies:** 1\ **Last updated:** [August 13, 2026, 9:14pm UTC](https://forum.sienci.com/t/gcontrol-alternative/26900 "2026-08-13T21:14:47Z")
I have been considering the GControl computer for quite some time, but I don’t want another Windows machine to deal with. In the July Production Update, Andy mentioned a lower priced alternative. Does anyone have any i… --- ## [Auto-zero touch plate and homing](https://forum.sienci.com/t/auto-zero-touch-plate-and-homing/26877)
**Author:** [@DavidB](https://forum.sienci.com/u/DavidB)\ **Replies:** 17\ **Last updated:** [August 12, 2026, 6:41pm UTC](https://forum.sienci.com/t/auto-zero-touch-plate-and-homing/26877 "2026-08-12T18:41:23Z")
I just wanted to verify that when using the auto-zero touch plate for xyz before each job there is no reason to home the machine, is that correct? --- ## [Auto Z probe Is there a way to slow down the movements](https://forum.sienci.com/t/auto-z-probe-is-there-a-way-to-slow-down-the-movements/26519)
**Author:** [@rq6162](https://forum.sienci.com/u/rq6162)\ **Replies:** 13\ **Last updated:** [August 12, 2026, 1:02pm UTC](https://forum.sienci.com/t/auto-z-probe-is-there-a-way-to-slow-down-the-movements/26519 "2026-08-12T13:02:28Z")
I have an Altmill 2x4 and an auto z probe. It works great–I would like to slow down the movement after it touches all sides and moves to the newly identified zero position. The plate tends to be kind of slippery so I … --- ## [Carbide3d Spindle in Altmill](https://forum.sienci.com/t/carbide3d-spindle-in-altmill/26880)
**Author:** [@GGStudio](https://forum.sienci.com/u/GGStudio)\ **Replies:** 0\ **Last updated:** [August 10, 2026, 6:03pm UTC](https://forum.sienci.com/t/carbide3d-spindle-in-altmill/26880 "2026-08-10T18:03:02Z")
Does anyone know if a Carbide3d 80mm spindle can be used in an altmill? And if so, how difficult would it be to make them work together? I have the VFD for it as well. I recently sold my 4x4 shapeoko for a 5x10 avid. Bu… --- ## [Extension to warranty](https://forum.sienci.com/t/extension-to-warranty/26865)
**Author:** [@Chucky\_ott](https://forum.sienci.com/u/Chucky_ott)\ **Replies:** 1\ **Last updated:** [August 7, 2026, 4:28pm UTC](https://forum.sienci.com/t/extension-to-warranty/26865 "2026-08-07T16:28:23Z")
Great news today on the extension to the Sienci warranty. Although they have been good in replacing parts outside of the warranty period, I’m sure the extension will increase sales. The email they sent out this morning… --- ## [Enclosure Inquiry](https://forum.sienci.com/t/enclosure-inquiry/26831)
**Author:** [@Derekh1979](https://forum.sienci.com/u/Derekh1979)\ **Replies:** 0\ **Last updated:** [August 4, 2026, 7:32pm UTC](https://forum.sienci.com/t/enclosure-inquiry/26831 "2026-08-04T19:32:51Z")
Hello Everyone, Torsion Box is almost ready and once that is installed in my enclosure I will be building the rest, want to ensure the torsion box installs onto the frame square and such. My question is, when I do the w… --- ## [GControl Flickering](https://forum.sienci.com/t/gcontrol-flickering/26818)
**Author:** [@Edward-Bigham](https://forum.sienci.com/u/Edward-Bigham)\ **Replies:** 6\ **Last updated:** [August 3, 2026, 8:49am UTC](https://forum.sienci.com/t/gcontrol-flickering/26818 "2026-08-03T08:49:09Z")
My Gcontrol is is constantly flickering about every 3 seconds. Its driving me nuts. Has anyone had this problem and if so how did you rectify this problem? Thanks in advance. Eddie --- ## [TLS not setting z height correctly](https://forum.sienci.com/t/tls-not-setting-z-height-correctly/26638)
**Author:** [@Wtaylor](https://forum.sienci.com/u/Wtaylor)\ **Replies:** 12\ **Last updated:** [August 2, 2026, 10:32pm UTC](https://forum.sienci.com/t/tls-not-setting-z-height-correctly/26638 "2026-08-02T22:32:20Z")
Installed new TLS per video and website. Set XYZ height via autozero fixture from here. Then run program, let the TLS probe the first tool, program starts and runs fine. When prompted for 2nd tool, replace, it probes… --- ## [Tool Length Sensor vs. AutoZero Touch Plate](https://forum.sienci.com/t/tool-length-sensor-vs-autozero-touch-plate/26623)
**Author:** [@mesmer8](https://forum.sienci.com/u/mesmer8)\ **Replies:** 11\ **Last updated:** [August 2, 2026, 7:55pm UTC](https://forum.sienci.com/t/tool-length-sensor-vs-autozero-touch-plate/26623 "2026-08-02T19:55:41Z")
Greetings all. Can someone line out for me the advantages of attaching the new Tool Length Sensor to my AltMill 4x4 when I’ve already got the AutoZero Touch Plate? Is it just the convenience of not having to put the AZTP… --- ## [Tool Length Sensor Availability](https://forum.sienci.com/t/tool-length-sensor-availability/26585)
**Author:** [@Davey](https://forum.sienci.com/u/Davey)\ **Replies:** 14\ **Last updated:** [July 28, 2026, 12:57pm UTC](https://forum.sienci.com/t/tool-length-sensor-availability/26585 "2026-07-28T12:57:20Z")
I just saw a Sienci video on youtube about installing a Sienci Tool Length Sensor, however, I don’t see a TLS for sale to put on my Altmill on Sienci website. Did I miss it? A search for TLS turns up nothing. Thanks, … --- ## [Alarm 17 while surfacing](https://forum.sienci.com/t/alarm-17-while-surfacing/26754)
**Author:** [@Roysecreekdesigns](https://forum.sienci.com/u/Roysecreekdesigns)\ **Replies:** 2\ **Last updated:** [July 26, 2026, 10:55pm UTC](https://forum.sienci.com/t/alarm-17-while-surfacing/26754 "2026-07-26T22:55:20Z")
I am trying to surface the spoilboard on my Altmill 4x4. I have followed Sienci’s video cnc tips/surfacing 101’ The spindle starts moves in the y direction -0.848 then goes back to start point where i get the Alarm 17 m… --- ## [Need help troubleshoot](https://forum.sienci.com/t/need-help-troubleshoot/26767)
**Author:** [@extremeprecisionli](https://forum.sienci.com/u/extremeprecisionli)\ **Replies:** 3\ **Last updated:** [July 23, 2026, 9:09pm UTC](https://forum.sienci.com/t/need-help-troubleshoot/26767 "2026-07-23T21:09:40Z")
Hi everyone, looking for some help and guidance please because my long mill mk2.5 was just assembled and won’t jog and instead gives an alarm ten when I try to move in gsender. Sienci labs has already sent a replacement … --- ## [ATC setup tips and tricks?](https://forum.sienci.com/t/atc-setup-tips-and-tricks/26629)
**Author:** [@Altmillal1114](https://forum.sienci.com/u/Altmillal1114)\ **Replies:** 7\ **Last updated:** [July 17, 2026, 6:59pm UTC](https://forum.sienci.com/t/atc-setup-tips-and-tricks/26629 "2026-07-17T18:59:45Z")
Hello all. My ATC setup shipped and looking for install tips and tricks on altmill mk2? Those that got their atc, what did you discover during install that would help make it go smoother? --- ## [Gsender downsizing projects](https://forum.sienci.com/t/gsender-downsizing-projects/26730)
**Author:** [@crowflight](https://forum.sienci.com/u/crowflight)\ **Replies:** 1\ **Last updated:** [July 16, 2026, 4:41pm UTC](https://forum.sienci.com/t/gsender-downsizing-projects/26730 "2026-07-16T16:41:50Z")
I’ve been using gsender for two years and this is the first time this has happened. I create a project in vcarve, 5" x 3/8" slot for example and save toolpath. When I open the file in g sender the dimensions have been d… --- ## [Guitar Z-axis: LongMill MK3 30x30 vs AltMill 2x4](https://forum.sienci.com/t/guitar-z-axis-longmill-mk3-30x30-vs-altmill-2x4/26722)
**Author:** [@SweatyFatUglyGuy](https://forum.sienci.com/u/SweatyFatUglyGuy)\ **Replies:** 5\ **Last updated:** [July 15, 2026, 7:38pm UTC](https://forum.sienci.com/t/guitar-z-axis-longmill-mk3-30x30-vs-altmill-2x4/26722 "2026-07-15T19:38:15Z")
I recently ordered a Longmill MK3 30x30 with a 80m 2.2kw spindle and plan on using it for my electric guitar builds. This should work for 99% of electric guitars. HOWEVER, because of the funky wave in my guitars, ide… --- ## [Longmill 3.0 and SLB EXT](https://forum.sienci.com/t/longmill-3-0-and-slb-ext/26709)
**Author:** [@whittamps](https://forum.sienci.com/u/whittamps)\ **Replies:** 4\ **Last updated:** [July 12, 2026, 3:02pm UTC](https://forum.sienci.com/t/longmill-3-0-and-slb-ext/26709 "2026-07-12T15:02:35Z")
I want to buy the Longmill 3.0. I also want to use the SLB EXT with the Longmill 3.0 in place of the stock control box. Can this be done? --- ## [Another theory on Z runaway](https://forum.sienci.com/t/another-theory-on-z-runaway/26154)
**Author:** [@Jens](https://forum.sienci.com/u/Jens)\ **Replies:** 17\ **Last updated:** [July 12, 2026, 12:18pm UTC](https://forum.sienci.com/t/another-theory-on-z-runaway/26154 "2026-07-12T12:18:55Z")
Had an interesting event today. I was in the process of setting Z using the paper method. I needed a few more steps down clicking on the mouse. There were a few steps that didn’t step … I thought that the mouse click had… --- ## [Atc failed at third project](https://forum.sienci.com/t/atc-failed-at-third-project/26700)
**Author:** [@Deuce](https://forum.sienci.com/u/Deuce)\ **Replies:** 9\ **Last updated:** [July 11, 2026, 8:20am UTC](https://forum.sienci.com/t/atc-failed-at-third-project/26700 "2026-07-11T08:20:48Z")
My atc spindle claw came off. Now I have no machine to work on. Called sienci can’t get anyone to answer the phone. Been sending emails and really haven’t got me nowhere. sending pictures of the broken part. Takes days … [Previous page](https://forum.sienci.com/c/general/information/40.md) [Next page](https://forum.sienci.com/c/general/information/40.md?page=2)