# Message d'un novice **URL:** \ **Category:** Snapmaker 2.0 (3-in-1)\ **Created:** [October 12, 2024, 7:34am UTC](https://forum.snapmaker.com/t/message-dun-novice/37908 "2024-10-12T07:34:56Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![NUMENDO](https://avatars.discourse-cdn.com/v4/letter/n/c4cdca/32.png) [@NUMENDO](https://forum.snapmaker.com/u/NUMENDO)\ **Post date:** [October 12, 2024, 7:34am UTC](https://forum.snapmaker.com/t/message-dun-novice/37908/1 "2024-10-12T07:34:56Z")
Hello everyone, first thing to say I am new to SM 2.0 and also the forum (all forums). So sorry if my question doesn’t belong here. And last thing, I am French and don’t speak English, so this is a “google” translation. I’m using SM 2.0 and my question is about dual extruder 3D printing. Here is my question: Can we install a nozzle different from what is marked on the HotEnd. Example: HotEnd 0.4 on which we would mount a 0.2 nozzle. Or do you need the nozzle corresponding to the HotEnd. A BIG thank you ---
**Author:** ![xchrisd](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/xchrisd/32/1503_2.png) [@xchrisd](https://forum.snapmaker.com/u/xchrisd)\ **Post date:** [October 12, 2024, 10:40am UTC](https://forum.snapmaker.com/t/message-dun-novice/37908/2 "2024-10-12T10:40:55Z")
Welcome to the forum! The nozzle is changeable and the size is only for touchscreen or Luban visualization. If you set up your gcode/slicer correctly it’s all fine. ---
**Author:** ![NUMENDO](https://avatars.discourse-cdn.com/v4/letter/n/c4cdca/32.png) [@NUMENDO](https://forum.snapmaker.com/u/NUMENDO)\ **Post date:** [October 13, 2024, 8:06am UTC](https://forum.snapmaker.com/t/message-dun-novice/37908/3 "2024-10-13T08:06:26Z")
Hello, thank you for your response. I understand the setting in Luban, but I don’t see what changes on the touch screen? In any case, thank you, I will be able to change my 0.4 nozzles with 0.2 ones (without changing the HotEnds) and learn how to use them. Good day. ---
**Author:** ![xchrisd](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/xchrisd/32/1503_2.png) [@xchrisd](https://forum.snapmaker.com/u/xchrisd)\ **Post date:** [October 13, 2024, 11:59am UTC](https://forum.snapmaker.com/t/message-dun-novice/37908/4 "2024-10-13T11:59:06Z")
Yes you got it correctly. Keep in mind following for printing with 0.2mm nozzle: Layer height: half of the diameter Layer width:1.2x of the diameter Speed: less than normal, attention small parts need a lot of cooling! (maybe use additional cooling fans) ---
**Author:** ![NUMENDO](https://avatars.discourse-cdn.com/v4/letter/n/c4cdca/32.png) [@NUMENDO](https://forum.snapmaker.com/u/NUMENDO)\ **Post date:** [October 13, 2024, 1:16pm UTC](https://forum.snapmaker.com/t/message-dun-novice/37908/5 "2024-10-13T13:16:05Z")
Merci, je m’y mets… ---
**Author:** ![NUMENDO](https://avatars.discourse-cdn.com/v4/letter/n/c4cdca/32.png) [@NUMENDO](https://forum.snapmaker.com/u/NUMENDO)\ **Post date:** [October 16, 2024, 8:14am UTC](https://forum.snapmaker.com/t/message-dun-novice/37908/6 "2024-10-16T08:14:04Z")
Bonjour, ça y est, j’ai fait mes essais… Assez concluant, je doit dire. Merci pour vos conseilles. Dans votre dernier post, vous me parlez de ventilateurs de refroidissement supplémentaire… Y-a-il un sujet là dessus, sur le forum ? Je vais chercher. Encore merci ---
**Author:** ![xchrisd](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/xchrisd/32/1503_2.png) [@xchrisd](https://forum.snapmaker.com/u/xchrisd)\ **Post date:** [October 16, 2024, 6:46pm UTC](https://forum.snapmaker.com/t/message-dun-novice/37908/7 "2024-10-16T18:46:54Z")
Glad it helped you. Printing small details or a small layer time could lead to ugly prints, for imagination have a look at this: > [@Snapmaker Tower Tips! (Images included)](https://forum.snapmaker.com/t/snapmaker-tower-tips-images-included/2750): > > Hey all! If you’ve tried to make a small tower with the snapmaker, you;ve probably noticed the walls look terrible and it isn’t setting properly. [[Album] Imgur [Imgur] ](https://imgur.com/a/g70ysg0) Figure 1: It’s difficult to see, however, the print has unevent sides and caved in sections. What causes this? This is caused by the nozzle never having time to …