First build, had a few questions I plan to build a GUS Simpson as my first build. I have access to a working printer, and everything else I'm doing on my own. Before I start ordering parts, I had a few questions. First of all, stepper motors. I plan to use drivers that can handle 2.2A. I want to get good motors. I plan to get one 2A NEMA 17 for the extruder, and more normal ~1.2A 17's for the arms. Is this overkill? Would it make sense to use a 23 for the extruder? Do my steppers need heatsinks? Secondly, the hotend. I'm not that familliar with hotends in general. What are the differences between them, and how compatible are different designs with different plastic parts? Are they as standard as NEMAs? And do I need a fan? Third, the Simpson's printbed is basalt. I really don't want to deal with custom-cut stone, especially to this thing's tolerances. Would glass work? Aluminum? Fourth: Is there some way to get the custom cut flat parts for GUS without paying for a service like Ponoko? And finally: Is GUS changing fast enough that I should wait to plan my build (I'll start in February)? https://reprap.org/forum/read.php?4,280877,280877#msg-280877 Sun, 09 Aug 2026 00:25:49 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,280877,281344#msg-281344 Re: First build, had a few questions https://reprap.org/forum/read.php?4,280877,281344#msg-281344 uncle_bob Reprappers Tue, 17 Dec 2013 19:28:07 -0500 https://reprap.org/forum/read.php?4,280877,281210#msg-281210 Re: First build, had a few questions https://reprap.org/forum/read.php?4,280877,281210#msg-281210 Maxx Mayhem Reprappers Tue, 17 Dec 2013 13:41:09 -0500 https://reprap.org/forum/read.php?4,280877,281161#msg-281161 Re: First build, had a few questions https://reprap.org/forum/read.php?4,280877,281161#msg-281161 here.

For GUS any NEMA17s will do. (Low torque requirement.)

I would just cut some wooden boards by hand. (The holes are 250mm from each other.) A 200mm round piece of glass would work well on top.

GUS is evolving. I suspect it won't evolve much by February.

I designed GUS for the UBIS hotend which doesn't need a fan. However, I have modified the mount to be compatible with the Kossel mount. So anything people mount to a Kossel will also mount to a GUS.]]> nicholas.seward Reprappers Tue, 17 Dec 2013 12:14:20 -0500 https://reprap.org/forum/read.php?4,280877,281159#msg-281159 Re: First build, had a few questions https://reprap.org/forum/read.php?4,280877,281159#msg-281159 epicepee Reprappers Tue, 17 Dec 2013 12:06:51 -0500 https://reprap.org/forum/read.php?4,280877,281034#msg-281034 Re: First build, had a few questions https://reprap.org/forum/read.php?4,280877,281034#msg-281034
I'd bet your local kitchen counter outfit would be more than happy to cut you a chunk of rock for the bed. A lot of other things will work. Rock looks cool.

You probably would get more GUS specific information in the area dedicated to these printers rather than in the general interest area. You might even find somebody who has a spare set of printed parts ...]]> uncle_bob Reprappers Tue, 17 Dec 2013 07:10:48 -0500 https://reprap.org/forum/read.php?4,280877,280879#msg-280879 Re: First build, had a few questions https://reprap.org/forum/read.php?4,280877,280879#msg-280879 Anonymous User Reprappers Tue, 17 Dec 2013 01:00:16 -0500 https://reprap.org/forum/read.php?4,280877,280877#msg-280877 First build, had a few questions https://reprap.org/forum/read.php?4,280877,280877#msg-280877
First of all, stepper motors. I plan to use drivers that can handle 2.2A. I want to get good motors. I plan to get one 2A NEMA 17 for the extruder, and more normal ~1.2A 17's for the arms. Is this overkill? Would it make sense to use a 23 for the extruder? Do my steppers need heatsinks?

Secondly, the hotend. I'm not that familliar with hotends in general. What are the differences between them, and how compatible are different designs with different plastic parts? Are they as standard as NEMAs? And do I need a fan?

Third, the Simpson's printbed is basalt. I really don't want to deal with custom-cut stone, especially to this thing's tolerances. Would glass work? Aluminum?

Fourth: Is there some way to get the custom cut flat parts for GUS without paying for a service like Ponoko?

And finally: Is GUS changing fast enough that I should wait to plan my build (I'll start in February)?]]> epicepee Reprappers Tue, 17 Dec 2013 00:41:14 -0500