<p>I want to buy my first FDM printer, to print household items and wearable gadgets too big for my LCD resin one. Due to financing &amp; tax reasons, what I'll buy now is what I will have for at least a year.</p>
<p>I was thinking about <a href="https://www.prusa3d.com/product/original-prusa-i3-mk3s-kit-3/" rel="nofollow noreferrer">Prusa i3 MK3S+</a>, and <a href="https://www.prusa3d.com/product/original-prusa-i3-mmu2s-upgrade-kit-for-mk2-5s-mk3s-org/" rel="nofollow noreferrer">MMU2S</a> looks really interesting and useful, especially to print water soluble supports. However, after reading reviews I hardly can justify buying it.</p>
<p>I have some technical experience, can make some things and once even built a 3 axis stepper motor system from scratch, and it worked. I have a resin LCD printer and have printed working parts. I still have NEMA17 motors, 4 of them.</p>
<p>Assuming I'll get Prusa i3 MK3S+, what else would I need to print and assemble MMU2S? Is there an official Bill Of Materials? Blueprints? STL files?</p>

[{'answer_id': 20126, 'author': 'Kilisi', 'author_id': 31811, 'author_profile': 'https://3dprinting.stackexchange.com/users/31811', 'pm_score': 1, 'selected': False, 'text': '<p>I would go back to the brass nozzle and try again for comparison.</p>\n<p>We had a batch of 10 cheap steel nozzles all of which caused problems.</p>\n'}, {'answer_id': 20154, 'author': 'evgen-baton', 'author_id': 35836, 'author_profile': 'https://3dprinting.stackexchange.com/users/35836', 'pm_score': 0, 'selected': False, 'text': '<p>I think the answer is printing temperature. This shiny PLA I\'m using is Eryone Silk PLA. Although the working temperature is stated as 190-220\xa0°C, my 205\xa0°C was too much for it. A temperature of 190-195\xa0°C produces good results though not as shiny anymore. It is three layers printed on the sample below with no problems.</p>\n<p><a href="https://i.stack.imgur.com/tJP8x.jpg" rel="nofollow noreferrer" title="3D printed sample printed with 195 degrees Celsius and showing no printing errors"><img src="https://i.stack.imgur.com/tJP8x.jpg" alt="3D printed sample printed with 195 degrees Celsius and showing no printing errors" title="3D printed sample printed with 195 degrees Celsius and showing no printing errors" /></a></p>\n'}]
['https://3dprinting.stackexchange.com/questions/20129', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/20803/']