After 2 months of waiting, the printrbot simple metal kit finally arrived yesterday. It is a popular 3d printer with good reviews. The printer can be obtained as fully assembled or as a kit. I chose the kit as I thought it would be more interesting to assemble it myself, plus it is a little cheaper that way. Since it had to be shipped internationally, I also thought it would be safer as a kit.
Day1 was dedicated to unboxing and beginning of assembly, following the assembly instructions. After opening the box I was met with a few large metal parts, metal rods, bearings, stepper motors, several bags, a controller board and more. I marked the bags according to the bill of materials to familiarize myself with the kit.
The assembly instructions turned out to be fairly detailed and reasonably easy to follow. After a little while I had the basic X-axis drive assembly in place. A stepper motor drives a pulley and two bearings help guide the belt, which in turn makes the print surface (the “bed”) move. On the left in the photo below is an end stop preventing the bed to move too far.
Next, we have 4 linear bearings in which the 250mm X-axis rods slide. They are held down by a metal clamp screwed into the metal base . At each end of the rods, a delrin block provides support for the print bed (to be installed later).
Turning the base upside down, we see the GT2 belt secured in one end of the bed and in a tensioner clamp on the other side. Two screws provides a means to tensioning the belt which runs over the pulley that is driven by the x-axis motor shown. The red and black cable is the power cable for the board (not yet connected).
The printer board is attached under the front of the base:
Top of print bed shown, plus vertical rods. Between them is the acme screw coupled to the Z-axis motor mounted under the base:
More to come in the following days!