Show all posts by user
(RepRap Användargrupp)
Page 1 of 1 Pages: 1
Results 1 — 9 of 9
One way to do this if you are planning on making several systems/have several identical pieces would be to order one of each printed and then use these to make silicone molds and cast the rest from a suitable resin. This is a process I've used several times while doing medium volume production and have found that it most of the times is significantly quicker than printing. Gathering all materials
by
Svensson
-
General
Thanks for the input!
32 bit electronics are already in place, unfortunately though not a duet.
The servos come equipped with 2500 line quadrature encoders which the drivers run in full quadratic mode (so if I got everything right it should be 10000 pulses in total per revolution). Moreover, for the Z-axis a belt is used to drive my ballscrews giving an additional reduction of about 1:2 (haven't
by
Svensson
-
Mechanics
Hello!
While redesigning my large core-xy printer to use ball screws instead I came across some nice 200W ABB servo motors with appropriate drivers that should provide around 2NM of torque. The drivers use standard step/direction inputs and runs off around 50-80 volts.
Are there any direct drawbacks on using real servos other than the fact that I could get about five cheap I3 clones for the co
by
Svensson
-
Mechanics
Mycket av delarna är inhandlade från Ebay, med undantag för ale-profilerna som kommer direkt från MISUMI. Resten som inte är standarddelar har jag antingen fått 3d-printade eller låtit laserskära i 4mm aluminium, vilket blev stadigt till den grad att om jag rycker i de övre balkarna är det bordet som rör på sig innan ramen i skrivaren börjar flexa. Dessutom har jag svarvat en del delar själv (syn
by
Svensson
-
Sweden, Gothenburg RepRap User Group
Hej!
Verkar vara ett rätt så vilande forum, men det hindrar en inte från att dela md sig av det man byggt.
Har byggt en skrivare efter eget huvud som tekniskt sett kanske inte är så mycket Reprap utan mer ett enormt monster.
Skrivvolym 750*750*800 mm, mer info finns här: Antoher big 3d printer
Så om någon behöver stora delar är det bara att höra av sig, skrivarn står i stockholmsområdet.
//Sve
by
Svensson
-
Sweden, Gothenburg RepRap User Group
Both ABS and nylon sticks to the PIR foam. However, with this completely unheated build, and the fact that it is currently operating in a garage about 10°C warm, i did find that the shrinking of both ABS and Nylon sometimes pulled the print loose. With the plexi-glass this didn't happen, and the bottom surface came out looking almost like a mirror. But with a heated build chamber, the foam will m
by
Svensson
-
CoreXY Machines
The wobble that you are seeing is mostly an effect of the lighting in combination with the rolling shutter in the camera. However the extruder carriage is wobbling a little bit while doing the infills. When designing the thing I did some computer simulations showing that the setup as of now would work, but the simulations didn't match the reality. So I do have another piece of extrusion on its wa
by
Svensson
-
CoreXY Machines
Hello!
During the last year and a half I have bee studying this forum while constructing and building this big printer as it is now printing, although much of it still are prototypes and in the need of an upgrade and/or change.
The printer is built with MISUMI's 2550 aluminium extrusions and uses a core-xy for movement. However, it moves the printhead in all three dimensions rather than just X
by
Svensson
-
CoreXY Machines