# Lead screw **URL:** \ **Category:** X-Carve\ **Created:** [January 17, 2018, 6:02pm UTC](https://community.inventables.com/t/lead-screw/49119 "2018-01-17T18:02:07Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![MannySavignano](https://avatars.discourse-cdn.com/v4/letter/m/9de0a6/32.png) [@MannySavignano](https://community.inventables.com/u/MannySavignano)\ **Post date:** [January 17, 2018, 6:02pm UTC](https://community.inventables.com/t/lead-screw/49119/1 "2018-01-17T18:02:07Z")
I is slipping a little during test run. mini screws are tighten. What could be the problem? [![](https://x-carve-instructions.inventables.com/1000mm/step2/photo/jpfs_DSC2704.jpg) ](https://x-carve-instructions.inventables.com/1000mm/step2/photo/jpfs_DSC2704.jpg) ---
**Author:** ![RobertBeattie](https://avatars.discourse-cdn.com/v4/letter/r/a587f6/32.png) [@RobertBeattie](https://community.inventables.com/u/RobertBeattie)\ **Post date:** [January 17, 2018, 6:07pm UTC](https://community.inventables.com/t/lead-screw/49119/2 "2018-01-17T18:07:37Z")
Where’s your nut? ---
**Author:** ![MannySavignano](https://avatars.discourse-cdn.com/v4/letter/m/9de0a6/32.png) [@MannySavignano](https://community.inventables.com/u/MannySavignano)\ **Post date:** [January 17, 2018, 6:09pm UTC](https://community.inventables.com/t/lead-screw/49119/3 "2018-01-17T18:09:26Z")
Not sure what you mean? ---
**Author:** ![MannySavignano](https://avatars.discourse-cdn.com/v4/letter/m/9de0a6/32.png) [@MannySavignano](https://community.inventables.com/u/MannySavignano)\ **Post date:** [January 17, 2018, 6:10pm UTC](https://community.inventables.com/t/lead-screw/49119/4 "2018-01-17T18:10:10Z")
Sorry, thats the pic from instructions. It was easier, sorry! My nut is on ---
**Author:** ![RobertBeattie](https://avatars.discourse-cdn.com/v4/letter/r/a587f6/32.png) [@RobertBeattie](https://community.inventables.com/u/RobertBeattie)\ **Post date:** [January 17, 2018, 6:13pm UTC](https://community.inventables.com/t/lead-screw/49119/5 "2018-01-17T18:13:29Z")
Are you carving? What exactly is slipping? ---
**Author:** ![MannySavignano](https://avatars.discourse-cdn.com/v4/letter/m/9de0a6/32.png) [@MannySavignano](https://community.inventables.com/u/MannySavignano)\ **Post date:** [January 17, 2018, 6:19pm UTC](https://community.inventables.com/t/lead-screw/49119/6 "2018-01-17T18:19:00Z")
I was testing my “Z” before the test carve and it slips a little. ---
**Author:** ![RobertBeattie](https://avatars.discourse-cdn.com/v4/letter/r/a587f6/32.png) [@RobertBeattie](https://community.inventables.com/u/RobertBeattie)\ **Post date:** [January 17, 2018, 6:24pm UTC](https://community.inventables.com/t/lead-screw/49119/7 "2018-01-17T18:24:08Z")
Uh huh. Tell me more. What direction is it slipping in? Is the belt slipping? Is the lead screw sliding up and down? Not enough info to troubleshoot. ---
**Author:** ![MannySavignano](https://avatars.discourse-cdn.com/v4/letter/m/9de0a6/32.png) [@MannySavignano](https://community.inventables.com/u/MannySavignano)\ **Post date:** [January 17, 2018, 6:26pm UTC](https://community.inventables.com/t/lead-screw/49119/8 "2018-01-17T18:26:34Z")
Not the belt. the lead screw (very long one) wasn’t turning and the router wasn’t going up. I confirmed that my pressing the arrow on my computer and getting close to see why the router wan’t moving. I could see that, at times, the lead screw wasn’t turning. I thoiguht I had to tighten th etiny screws below the nut, but they seemed good. ---
**Author:** ![RobertBeattie](https://avatars.discourse-cdn.com/v4/letter/r/a587f6/32.png) [@RobertBeattie](https://community.inventables.com/u/RobertBeattie)\ **Post date:** [January 17, 2018, 6:36pm UTC](https://community.inventables.com/t/lead-screw/49119/9 "2018-01-17T18:36:46Z")
So, you are clicking the on-screen arrows and sometimes the stepper motor spins and sometimes it doesn’t? If this is the case, it would suggest that you have some sort of wiring or connection issue. If that is the case, check the Z axis connections in the connectors both at the stepper and at the XController. ---
**Author:** ![MannySavignano](https://avatars.discourse-cdn.com/v4/letter/m/9de0a6/32.png) [@MannySavignano](https://community.inventables.com/u/MannySavignano)\ **Post date:** [January 17, 2018, 6:38pm UTC](https://community.inventables.com/t/lead-screw/49119/10 "2018-01-17T18:38:46Z")
No, sorry. The motor spins, the lead screw doesn’t all the time. ---
**Author:** ![MannySavignano](https://avatars.discourse-cdn.com/v4/letter/m/9de0a6/32.png) [@MannySavignano](https://community.inventables.com/u/MannySavignano)\ **Post date:** [January 17, 2018, 7:01pm UTC](https://community.inventables.com/t/lead-screw/49119/12 "2018-01-17T19:01:29Z")
Thanks! I tested it again and it seemed to be fine. Not 100% in belief of that… would it be at all possible for you to add links for what you are recommending?? I think I would like to do that, but just don’t have enough knowledge at this point. ---
**Author:** ![X-CNC](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/x-cnc/32/50146_2.png) [@X-CNC](https://community.inventables.com/u/X-CNC)\ **Post date:** [January 17, 2018, 8:38pm UTC](https://community.inventables.com/t/lead-screw/49119/13 "2018-01-17T20:38:05Z")
This is the type of screw you want to use; [https://www.amazon.com/BoNaYuanDa-120pcs-Socket-Screws-M3x10mm/dp/B01MQJPAP0/ref=sr\_1\_sc\_2?s=hi&ie=UTF8&qid=1516220769&sr=1-2-spell&keywords=M3x8+SocketHead+cap+screw](https://www.amazon.com/BoNaYuanDa-120pcs-Socket-Screws-M3x10mm/dp/B01MQJPAP0/ref=sr_1_sc_2?s=hi&ie=UTF8&qid=1516220769&sr=1-2-spell&keywords=M3x8+SocketHead+cap+screw) [https://www.amazon.com/iFlight-Titanium-Socket-Button-Screws/dp/B073TS1Z96/ref=sr\_1\_6?ie=UTF8&qid=1516221327&sr=8-6&keywords=8mm+m3+button+head+screw](https://www.amazon.com/iFlight-Titanium-Socket-Button-Screws/dp/B073TS1Z96/ref=sr_1_6?ie=UTF8&qid=1516221327&sr=8-6&keywords=8mm+m3+button+head+screw) You’ll need M3 x 8mm size. I prefer the Titanium Button Head style, but the cap style also works. Home Depot has them for 45 cents a piece. Remember to always use Blue Loctite on the screws. ---
**Author:** ![X-CNC](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/x-cnc/32/50146_2.png) [@X-CNC](https://community.inventables.com/u/X-CNC)\ **Post date:** [January 17, 2018, 9:22pm UTC](https://community.inventables.com/t/lead-screw/49119/15 "2018-01-17T21:22:22Z")
> [@AngusMcleod](#): > > It may require an M4 screw rather than M3. Thanks. [https://www.amazon.com/10-M4-Stainless-Socket-MonsterBolts/dp/B078LC2SVP/ref=sr\_1\_22?s=hi&ie=UTF8&qid=1516224016&sr=1-22&keywords=Cap+Screws+M4+x+8mm](https://www.amazon.com/10-M4-Stainless-Socket-MonsterBolts/dp/B078LC2SVP/ref=sr_1_22?s=hi&ie=UTF8&qid=1516224016&sr=1-22&keywords=Cap+Screws+M4+x+8mm) ---
**Author:** ![JustinBusby](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/justinbusby/32/30906_2.png) [@JustinBusby](https://community.inventables.com/u/JustinBusby)\ **Post date:** [January 17, 2018, 10:00pm UTC](https://community.inventables.com/t/lead-screw/49119/16 "2018-01-17T22:00:54Z")
Pulley set screws are M3. I bought these and used them, no loctite required: [http://www.mcmaster.com/nav/enter.asp?partnum=93705A814](http://www.mcmaster.com/nav/enter.asp?partnum=93705A814) ---
**Author:** ![X-CNC](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/x-cnc/32/50146_2.png) [@X-CNC](https://community.inventables.com/u/X-CNC)\ **Post date:** [January 17, 2018, 10:15pm UTC](https://community.inventables.com/t/lead-screw/49119/18 "2018-01-17T22:15:50Z")
> [@JustinBusby](#): > > I bought these and used them, no loctite require Are these the ones with epoxy? ---
**Author:** ![JustinBusby](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/justinbusby/32/30906_2.png) [@JustinBusby](https://community.inventables.com/u/JustinBusby)\ **Post date:** [January 17, 2018, 10:43pm UTC](https://community.inventables.com/t/lead-screw/49119/19 "2018-01-17T22:43:28Z")
Nylon patch.