# Our Hardware **URL:** https://forum.sienci.com/c/feedback/hardware/26.md [Latest](https://forum.sienci.com/latest.md) · [Categories](https://forum.sienci.com/categories.md) --- ## [About the Our Hardware category](https://forum.sienci.com/t/about-the-our-hardware-category/3492)
**Author:** [@chrismakesstuff](https://forum.sienci.com/u/chrismakesstuff)\ **Replies:** 0
Any feedback or suggestions on how we can improve our hardware! --- ## [Question about LongMill Mk2.5 Kits](https://forum.sienci.com/t/question-about-longmill-mk2-5-kits/27246)
**Author:** [@RadiumSkull](https://forum.sienci.com/u/RadiumSkull)\ **Replies:** 2\ **Last updated:** [October 9, 2026, 11:43am UTC](https://forum.sienci.com/t/question-about-longmill-mk2-5-kits/27246 "2026-10-09T11:43:57Z")
When I visit the Sienci LongMill store page, it has this text: “LongMill MK2.5 CNCs & Kits Price Drop – Save $300CAD/$220USD” But there aren’t any links or hints about Mk2.5 items. Is that a mistake, or are kits still … --- ## [Need for a pendant, auto zero touch plate improvements](https://forum.sienci.com/t/need-for-a-pendant-auto-zero-touch-plate-improvements/26628)
**Author:** [@Smoose](https://forum.sienci.com/u/Smoose)\ **Replies:** 8\ **Last updated:** [August 13, 2026, 1:23am UTC](https://forum.sienci.com/t/need-for-a-pendant-auto-zero-touch-plate-improvements/26628 "2026-08-13T01:23:33Z")
Hi, We need a pendant like the one now offered by Shapeoko. A pendant is great way to position the machine, indicate edges, find centers, etc. It would be great if the auto zero touch plate had an LED indicating contac… --- ## [Altmill Gen 3 suggesion](https://forum.sienci.com/t/altmill-gen-3-suggesion/26594)
**Author:** [@ArmyDoc](https://forum.sienci.com/u/ArmyDoc)\ **Replies:** 1\ **Last updated:** [June 22, 2026, 1:34pm UTC](https://forum.sienci.com/t/altmill-gen-3-suggesion/26594 "2026-06-22T13:34:42Z")
The two things I would wish the current Altmill 4x4 had would be the increased Z axis travel of the Altmil 4x8 and a slightly increased length to allow for the ATC while still allowing for a full 4x4 half sheet. Are the… --- ## [SLB-EXT board connector documentation / schematic info](https://forum.sienci.com/t/slb-ext-board-connector-documentation-schematic-info/21767)
**Author:** [@JPlocher](https://forum.sienci.com/u/JPlocher)\ **Replies:** 9\ **Last updated:** [September 12, 2025, 8:56pm UTC](https://forum.sienci.com/t/slb-ext-board-connector-documentation-schematic-info/21767 "2025-09-12T20:56:11Z")
Does anyone have a detailed and annotated SLB-EXT connector documentation image like example, but for all the connectors on the board? If not, @gwilki et al, are the Altium SLB-EXT files available, or a PDF of the relev… --- ## [Female threads for inductive sensor](https://forum.sienci.com/t/female-threads-for-inductive-sensor/17358)
**Author:** [@Chucky\_ott](https://forum.sienci.com/u/Chucky_ott)\ **Replies:** 1\ **Last updated:** [July 16, 2025, 7:42pm UTC](https://forum.sienci.com/t/female-threads-for-inductive-sensor/17358 "2025-07-16T19:42:03Z")
The inductive sensor that attaches to the z-axis assembly doesn’t use a lock washer at the front because of the limited thread depth for clamping the nut. So why not thread the z-axis plate ito which the sensor can scre… --- ## [Y-axis drag-chain end does not sit properly](https://forum.sienci.com/t/y-axis-drag-chain-end-does-not-sit-properly/17464)
**Author:** [@Chucky\_ott](https://forum.sienci.com/u/Chucky_ott)\ **Replies:** 0\ **Last updated:** [May 29, 2025, 9:40pm UTC](https://forum.sienci.com/t/y-axis-drag-chain-end-does-not-sit-properly/17464 "2025-05-29T21:40:19Z")
Maybe it’s just me but… The y-axis drag chain end that installs on the X-axis gantry does not sit properly on the gantry because of the raised lip on the gantry. If you tighten the bolts too much, you’ll deform the dra… --- ## [A FEW Suggestions after a few months](https://forum.sienci.com/t/a-few-suggestions-after-a-few-months/16308)
**Author:** [@Windlasher](https://forum.sienci.com/u/Windlasher)\ **Replies:** 5\ **Last updated:** [April 7, 2025, 7:21pm UTC](https://forum.sienci.com/t/a-few-suggestions-after-a-few-months/16308 "2025-04-07T19:21:41Z")
A FEW SUGGESTIONS FROM THE FIELD: ASSEMBLY: The holes on the feet should be elongated (Y axis) to allow you to slide each side back and forth when squaring up the machine. The way it is now means that if you don’t get… --- ## [Auto Probe Issue](https://forum.sienci.com/t/auto-probe-issue/13878)
**Author:** [@JAC](https://forum.sienci.com/u/JAC)\ **Replies:** 4\ **Last updated:** [January 23, 2025, 6:28pm UTC](https://forum.sienci.com/t/auto-probe-issue/13878 "2025-01-23T18:28:00Z")
My auto probe kept moving after it touched the y axis wall, sometimes it would not stop on the z axis touch shoving the bit into the probe…not good but the problem was intermittent. Sometimes the touch plate would not t… --- ## [Safety Question - grbl running even with power off? Got a nasty surprise](https://forum.sienci.com/t/safety-question-grbl-running-even-with-power-off-got-a-nasty-surprise/1017)
**Author:** [@jwoody18](https://forum.sienci.com/u/jwoody18)\ **Replies:** 1\ **Last updated:** [December 18, 2024, 8:06pm UTC](https://forum.sienci.com/t/safety-question-grbl-running-even-with-power-off-got-a-nasty-surprise/1017 "2024-12-18T20:06:04Z")
I had an exprience the other day that alarmed me that I wanted to ask about because I think it is a potential safety issue and it certainly caught me off guard. I’ve suspect that the Arduino micro controller inside the … --- ## [Dust shoe hanging on drag chain?](https://forum.sienci.com/t/dust-shoe-hanging-on-drag-chain/14298)
**Author:** [@Yazzidawg](https://forum.sienci.com/u/Yazzidawg)\ **Replies:** 2\ **Last updated:** [November 26, 2024, 11:56am UTC](https://forum.sienci.com/t/dust-shoe-hanging-on-drag-chain/14298 "2024-11-26T11:56:36Z")
Has anyone had this happen: From the home position with z zeroed in, my project (wasteboard leveling) started and the brushes on the dust shoe got hung up on the drag chain as the spindled dropped down to begin the job.… --- ## [The Dust Shoe V2](https://forum.sienci.com/t/the-dust-shoe-v2/1857)
**Author:** [@mowog](https://forum.sienci.com/u/mowog)\ **Replies:** 1\ **Last updated:** [August 22, 2024, 7:51pm UTC](https://forum.sienci.com/t/the-dust-shoe-v2/1857 "2024-08-22T19:51:19Z")
I have the new and improved dust shoe Improved? well I have never had the old one so I can’t judge it on that. Some observations on the new dust shoe… Durability seems to be a bit of an issue. The little window might … --- ## [Instruction error?](https://forum.sienci.com/t/instruction-error/2231)
**Author:** [@msparks916](https://forum.sienci.com/u/msparks916)\ **Replies:** 1\ **Last updated:** [August 22, 2024, 7:49pm UTC](https://forum.sienci.com/t/instruction-error/2231 "2024-08-22T19:49:40Z")
When putting together my pullies, shouldn’t this line in the printed instructions be adjusted from “The base of the second pulley should be flush with the top of the motor shaft when tightened.” to “The top of the second… --- ## [IDC 1/4" HOG roughing end mill](https://forum.sienci.com/t/idc-1-4-hog-roughing-end-mill/6715)
**Author:** [@ronboklein](https://forum.sienci.com/u/ronboklein)\ **Replies:** 7\ **Last updated:** [August 18, 2024, 2:56pm UTC](https://forum.sienci.com/t/idc-1-4-hog-roughing-end-mill/6715 "2024-08-18T14:56:56Z")
IDC 1/4" HOG roughing end mill I have seen a few posts extolling the virtues of this bit for roughing out u to 2" deep at pretty high speeds. The bit from IDC in the US is US$36.26. Thats not a bad price but they want … --- ## [Routine Maintenance](https://forum.sienci.com/t/routine-maintenance/4825)
**Author:** [@FBWoodcraft](https://forum.sienci.com/u/FBWoodcraft)\ **Replies:** 3\ **Last updated:** [May 31, 2023, 9:42pm UTC](https://forum.sienci.com/t/routine-maintenance/4825 "2023-05-31T21:42:07Z")
The set screws on the Z axis Lead screw pulley came loose and allowed the router to drive down into the work piece and spoil board. It was running a 40 min toolpath and had gone approx. 30 minutes. I had left it unatte… --- ## [Kansas City Missouri warehouse](https://forum.sienci.com/t/kansas-city-missouri-warehouse/8656)
**Author:** [@hamanjam](https://forum.sienci.com/u/hamanjam)\ **Replies:** 0\ **Last updated:** [April 21, 2023, 1:51am UTC](https://forum.sienci.com/t/kansas-city-missouri-warehouse/8656 "2023-04-21T01:51:55Z")
Your U.S. office should be in Kansas City, MO. I’m an IT guy who’s set up offices so I’m ready to go (and would love to do something that actually interests me). Kansas City is in the Midwest US and shipping would be… --- ## [MK2 Dust Shoe STL](https://forum.sienci.com/t/mk2-dust-shoe-stl/5819)
**Author:** [@rawarner](https://forum.sienci.com/u/rawarner)\ **Replies:** 2\ **Last updated:** [March 11, 2023, 2:58am UTC](https://forum.sienci.com/t/mk2-dust-shoe-stl/5819 "2023-03-11T02:58:14Z")
Will, and/or when will, Sienci make the stl for the new MK2 dust shoe available? I was machining a recess on a large piece with the shoe pushed down, and when the job finished it caught on the high perimeter of the piece… --- ## [Manufacturing Error! Pause Shipments!](https://forum.sienci.com/t/manufacturing-error-pause-shipments/4565)
**Author:** [@CMFaub](https://forum.sienci.com/u/CMFaub)\ **Replies:** 0\ **Last updated:** [December 15, 2021, 6:34am UTC](https://forum.sienci.com/t/manufacturing-error-pause-shipments/4565 "2021-12-15T06:34:00Z")
Bolt pattern on y axis rail not aligned!!! This is a manufacturing mistake by whomever is machining the aluminum angle NO legs can be mounted. sorry to post here this is important. --- ## [CNC Ideas and improvements](https://forum.sienci.com/t/cnc-ideas-and-improvements/3667)
**Author:** [@Menglor](https://forum.sienci.com/u/Menglor)\ **Replies:** 0\ **Last updated:** [August 16, 2021, 2:26am UTC](https://forum.sienci.com/t/cnc-ideas-and-improvements/3667 "2021-08-16T02:26:27Z")
This is probably outside the scope of gSender, but a few things I would like to see for the longmill. 1 - Rotary Axis support. 2 - I would like to be able to bolt down and item, and the Longmill using a probe to measu… --- ## [10W Laser, future add on?](https://forum.sienci.com/t/10w-laser-future-add-on/4961)
**Author:** [@Fancu12](https://forum.sienci.com/u/Fancu12)\ **Replies:** 0\ **Last updated:** [January 18, 2022, 6:09pm UTC](https://forum.sienci.com/t/10w-laser-future-add-on/4961 "2022-01-18T18:09:13Z")
any plans to offer a 80w/10w optical laser using dual diodes and fac lens? i see more of them becoming available in the market place. --- ## [Long Mill add ons](https://forum.sienci.com/t/long-mill-add-ons/3139)
**Author:** [@Menglor](https://forum.sienci.com/u/Menglor)\ **Replies:** 0\ **Last updated:** [June 20, 2021, 2:33am UTC](https://forum.sienci.com/t/long-mill-add-ons/3139 "2021-06-20T02:33:31Z")
A few weeks back I heard you speak on a YouTube video that you are going to try and push the long mail into more of an add-ons functionality rather than new products I like the idea personally I think it’s a step in the… --- ## [Missing bolts for assembly](https://forum.sienci.com/t/missing-bolts-for-assembly/3623)
**Author:** [@JohnMenke](https://forum.sienci.com/u/JohnMenke)\ **Replies:** 2\ **Last updated:** [September 7, 2021, 8:33pm UTC](https://forum.sienci.com/t/missing-bolts-for-assembly/3623 "2021-09-07T20:33:35Z")
Assembling my Longmill today. My bolt pack was labeled “batch 5”, however I was sent the old style router mount. This left me without the 4 m5x12mm bolts needed. The package was also short 4 m8x16mm bolts, but had lots o… --- ## [Touch plate thoughts](https://forum.sienci.com/t/touch-plate-thoughts/3546)
**Author:** [@jwoody18](https://forum.sienci.com/u/jwoody18)\ **Replies:** 9\ **Last updated:** [January 11, 2020, 6:57pm UTC](https://forum.sienci.com/t/touch-plate-thoughts/3546 "2020-01-11T18:57:32Z")
I’ll toss a question out there. The 3.5"x3.5" touch plate that I discussed in my post here: XYZ Zeroing plate and tool diameter - #8 by jwoody18 finally got some use yesterday at my local Makerspace. It immediately occ… --- ## [Suggestion: Add well documented accessory mounting points and types to the Longmill](https://forum.sienci.com/t/suggestion-add-well-documented-accessory-mounting-points-and-types-to-the-longmill/998)
**Author:** [@jwoody18](https://forum.sienci.com/u/jwoody18)\ **Replies:** 0\ **Last updated:** [June 4, 2020, 5:27pm UTC](https://forum.sienci.com/t/suggestion-add-well-documented-accessory-mounting-points-and-types-to-the-longmill/998 "2020-06-04T17:27:32Z")
@chrismakesstuff I’ve been meaning to say this for a while. One area where I think you can make an easy and powerful improvement to the entire Longmill design is to come up with a common accessory rail or track or bolt … --- ## [Why no shielded cable to steppers?](https://forum.sienci.com/t/why-no-shielded-cable-to-steppers/2806)
**Author:** [@LosOjosRojos](https://forum.sienci.com/u/LosOjosRojos)\ **Replies:** 29\ **Last updated:** [June 7, 2021, 3:59am UTC](https://forum.sienci.com/t/why-no-shielded-cable-to-steppers/2806 "2021-06-07T03:59:13Z")
I am curious as to know why SiEnCi elected to NOT use shielded cables to the steppers? Anyone? Chris? Andy? --- ## [Suggestion: Improved Mounting approach for Router Mount making moving it easier - Also Z-height question](https://forum.sienci.com/t/suggestion-improved-mounting-approach-for-router-mount-making-moving-it-easier-also-z-height-question/999)
**Author:** [@jwoody18](https://forum.sienci.com/u/jwoody18)\ **Replies:** 14\ **Last updated:** [December 6, 2020, 8:54pm UTC](https://forum.sienci.com/t/suggestion-improved-mounting-approach-for-router-mount-making-moving-it-easier-also-z-height-question/999 "2020-12-06T20:54:10Z")
@chrismakesstuff ROUTER MOUNT UPGRADE SUGGESTION Is there any mechanical engineering reason you couldn’t design a router mount that has a slot cut in the rear bottom of the mount and fits over the vertical gantry plate… --- ## [ZZ vs. 2RS flange bearings](https://forum.sienci.com/t/zz-vs-2rs-flange-bearings/737)
**Author:** [@JHahn](https://forum.sienci.com/u/JHahn)\ **Replies:** 1\ **Last updated:** [April 9, 2020, 1:55pm UTC](https://forum.sienci.com/t/zz-vs-2rs-flange-bearings/737 "2020-04-09T13:55:18Z")
Hi all, just wondered why the flange bearings are of type ZZ instead of 2RS. As I know, one uses: open ones, if having high rpm but absolutely no dust 2RS, if low rpm (up to 3000) but dust ZZ somewhere in between Cu… --- ## [Z axis cable is too short](https://forum.sienci.com/t/z-axis-cable-is-too-short/295)
**Author:** [@KimballArms](https://forum.sienci.com/u/KimballArms)\ **Replies:** 7\ **Last updated:** [March 31, 2020, 10:18pm UTC](https://forum.sienci.com/t/z-axis-cable-is-too-short/295 "2020-03-31T22:18:56Z")
So the Z axis stepper cable is too short for me to be able to locate the controller anywhere but a few inches away from the left rail … ok, so “make a new cable” - no problem… though I was wondering… is there any bene… --- ## [Don’t tin wire ends for connectors?](https://forum.sienci.com/t/don-t-tin-wire-ends-for-connectors/494)
**Author:** [@Dave](https://forum.sienci.com/u/Dave)\ **Replies:** 7\ **Last updated:** [February 5, 2020, 10:33pm UTC](https://forum.sienci.com/t/don-t-tin-wire-ends-for-connectors/494 "2020-02-05T22:33:41Z")
I noticed the power wire ends are tinned. I work in electronics, and I’ve always been under the impression this is a problem, because solder will slowly “flow” when clamped in the connector, potentially leaving a loose a… --- ## [2 pin connector next to incoming power](https://forum.sienci.com/t/2-pin-connector-next-to-incoming-power/377)
**Author:** [@zymurgy\_cat](https://forum.sienci.com/u/zymurgy_cat)\ **Replies:** 9\ **Last updated:** [December 19, 2019, 7:43pm UTC](https://forum.sienci.com/t/2-pin-connector-next-to-incoming-power/377 "2019-12-19T19:43:30Z")
What is the 2 pin connector next to the incoming power on the controller for? I couldn’t find any label for it. [Next page](https://forum.sienci.com/c/feedback/hardware/26.md?page=1)