<p>I have a semi-diy hotend setup on my MOOZ-2 (an obscure chinese printer). It requires that the total nozzle length (including threading) is longer than 15 mm. So far, I've been using Volcano nozzles because they're the only ones I can find that meet this requirement. However I believe this negatively impacts performance because they stick out way beyond the heater block (see picture below). Unfortunately, the next size I can find are MK8 or V6 nozzles which are 13 mm - too short! Are there any nozzle sizes in between that I could use?</p>
<p><a href="https://i.stack.imgur.com/IN5df.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IN5df.jpg" alt="Nozzle setup" /></a></p>

[{'answer_id': 19307, 'author': 'Tal', 'author_id': 7384, 'author_profile': 'https://3dprinting.stackexchange.com/users/7384', 'pm_score': 3, 'selected': False, 'text': '<p><strong>I think this is just an overcomplicated lost-PLA (investment) casting.</strong></p>\n<p>What you\'re asking for is to create an object, create a mold around it, and then burn out the object and replace it with metal.  Traditionally this is done with wax, <a href="https://en.wikipedia.org/wiki/Lost-wax_casting" rel="nofollow noreferrer">and called lost-wax casting</a>, but the same can be done with anything that melts/burns away, including PLA.</p>\n<p>Rather than worrying about burning hairs and pressure and compaction of metal powder, print a model, and use the correct kind of plaster (a search for &quot;investment casting plaster&quot; will get you going down the right path) to make your mold.  Heat the metal powder in a crucible, instead of the mold itself, and pour it through the expansion/extra material tube you were talking about.</p>\n'}, {'answer_id': 19312, 'author': 'Kilisi', 'author_id': 31811, 'author_profile': 'https://3dprinting.stackexchange.com/users/31811', 'pm_score': 1, 'selected': True, 'text': "<p>I don't see why it wouldn't work. It doesn't seem to be the optimal way but I haven't tried it.</p>\n<p>Only thing that might be an issue is that PLA doesn't burn away clean (not for me anyway) which can leave defects in the product. But there are filaments specifically made for casting which apparently burn away with no residue.</p>\n<p>This is assuming you can actually successfully print a complex object with walls that thin.</p>\n"}]
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