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This is the Printupy Desktop 3D printer from 2PrintBeta.
The Printupy Desktop 3D printer, a standalone complete system with modern 3D printing technology is not a kit, so no assembly is needed. It is a professional 3D printer made in germany.
It comes with a nice acrylic case and a rigid aluminium frame. It has an integrated power supply and a nice display unit to control the 3D printer. It can print from USB and from SD card, so you can use it standalone on your desk.
For extra precision this machine uses screw-on linear bearings and all axes are driven by steppermotors and T2.5 belts. The core of the 3D printer is the autonomous Echinus board, which can simultaneously control up to 6 steppermotors, and its nice Echinus Vision control system.
The hotend is made from stainless steel and consists of one tube from the extruder to the end. Due to this there is no gap in the nozzle, into which melted plastic could creep, and no plastic parts which could melt or get brittle. It is durable, precise and doesn't need special maintenance.
In the Dualx version, the two extruders are mounted on two seperately moving carriages, so that the currently not active printhead can be safely parked on one side. The firmware makes sure that those two heads automatically switch positions when needed. This way it is possible to separate the application of two different materials or colours.
For the Z axis, this printer uses an innovative method to make sure there are no errors introduced by not perfectly straight lead screws. This printer uses timing belts for the Z axis, so this axis gets pulled up perfectly straight, which ensures that all printed layers are placed perfectly onto each others. Also Z movements are possible in a higher speed. This greatly improves the print quality as you can see in the object below.
The Printupy runs with the adapted OpenSource marlin firmware. The latest version can be downloaded directly from our website.
You can either run it autonomosly using the Echinus Vision control to load files directly from the SD-card or with your PC connected to the printer via USB.
Some materials, the Printupy was tested with:
ABS (Acrylonitrile butadiene styrene) is the polymer LEGO consists of. It has a melting temperature of about 160°C and is printable at 230-250°C. The Printupy prints very good using ABS. It is neccessary to use the heated printbed at about 110°C to prevent warping. For best adhesion to the printbed, UHU photostic is recommended. If the printer does not achieve the temperature, it may help to reduce the speed of the attached fans. You can either change the speed directly with the control panel or add “M106 P0/1 S200” into the gcode, where “P0” or “P1” is the number of the fan and the value after “S” is the speed of the fan ranging from 0 (off) to 255 (maximum speed). At values below 120 the fan might not even start to spin, so values between 140 and 200 are recommended. ABS is best for functional parts. It can be loaded without breaking too fast.
PLA (Polylacticacid) has a wide melting range from 80°C, where it gets soft to 160°C, where it starts melting. Due to this, the melting zone in the hotend is longer than the one of ABS. It is neccessary to adjust the direction of the fans to blow directly at the gap between the heater and the heat sink at maximum speed. The Printupy can print PLA, but only at low speed. Because of the large melting zone the plastic gets soft and compressed. If the extrusion speed is to high, the compression compensates the force of the extruder and the nozzles blocks because of to high friction. The heated printbed should be set to 60°C to 70°C and additionally UHU photostic helps for good adhesion. PLA is best for complicated shapes. It shows almost no warp so large overhangs can be printed easily. It is very strong, but thin parts can be fragile.
Soft PLA is not as hard as PLA or ABS. The melting range is similar to PLA, but the recommended printing temperaure is slightly higher at about 210°C to 220°C. Because soft PLA shows a tendency to bend between the extruder and the nozzle, you can print it only at very low speed (3x to 5x slowlier than PLA). Also the layers doesn't stick together, if soft PLA is printed to fast. When printed with the right speed and temperature it is possible to print rubber stamps or RC tires.