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General discussions. For specific printers / electronics / fabrication methods / softwares, please see other sections.
Re: Looking for input as I learn about and design my first 3D printer - 9 years ago
These are what I ended up with: He had them for $5 each at a hamfest last weekend, but $7.95 isn't bad either.by kscharf - General
Re: Looking for input as I learn about and design my first 3D printer - 9 years ago
I have another question. Was thinking about building a bed heater. I found 10 pieces of 0.1 ohm 25 watt metal cased power resistors (the kind you can bolt to a heat sink) in the junk box. Connected in series (1 ohm) they would pull 12 amps from a 12 volt supply for 144 watts of power. This is more than the RAMPS board can control on board (unless I jumper out the fuse or replace it with a REAby kscharf - General
Re: Looking for input as I learn about and design my first 3D printer - 9 years ago
I've actually experimented with this idea. I also wrapped some thin brass shim stock around the tubing and then clamped it to the shafts with the smallest hose clamps I could find. I need to connect a 1/4" shaft to a 5/16" rod. It also has to handle the down weight without pulling out. Might work with the addition of the hose clamps.by kscharf - General
Re: Looking for input as I learn about and design my first 3D printer - 9 years ago
The type of design that moves the corexy will have the smallest footprint on the desk, which is nice. However, this kind of design is much more complex mechanically. I'm going with the more typical approach where the bed moves in the Y axis and having a "gantry" moving up and down in the Z axis. The gantry IS the X axis. (the other variant is to have the gantry fixed and the Z axis rides along tby kscharf - General
Re: Looking for input as I learn about and design my first 3D printer - 9 years ago
I've just started this journey. I had a box full of stepper motors found in the trash at a former job, but they were mostly small NEMA17's (about half the length of the ones I see in reprap photos), so probably too small. Yesterday I found some NEMA23 steppers at a hamfest, these are 2.7V @ 1.8A nameplate ratings with 3/8" long 1/4" dia knurled shafts. Hopefully I can find pulleys and/or shaftby kscharf - General