The 3rd module does not come with bigger issues. It was quite convenient to set everything up. In the last part, I made a mistake where I glued the M3 brass inserts into the hole. Now I knew that there are heat inserts. And with some head, it is straightforward to install them. Although I have to glue the M4 inserts in place because the inserts are too small for the hole.
Preparation
BOM for part 3
BOM ID | Quantity | Name |
---|---|---|
8 | 1 | Nema 17 R1:5 Motor |
13 | 1 | Smooth bar 114 mm |
15 | 3 | Bearing 8 x 22 7 |
17 | 3 | Bearing 4 x 14 x 5 |
20 | 6 | M3 inserts |
21 | 1 | 8mm Pulley |
231 | 1 | Rod bar L 42 mm Diameter 8 mm |
24 | 1 | Coupling 8mm - 5mm |
43 | 1 | Nema 17 Stepper Motor 42BYGHW609, (1.7A, 1.8°, 4000 g·cm) |
101 | 8 | Screw M3x10 |
102 | 6 | Screw M3x12 |
107 | 7 | Screw M3x40 |
110 | 4 | Screw M4x16 mm |
118 | 7 | M3 Nut |
119 | 1 | M4 Nut |
123 | 1 | Screw M4x20 mm |
210 | 1 | 3M1 |
210A / 233 2 | 1 | 3M2C |
211 / 234 2 | 1 | 3M2CC |
212 | 1 | T3M1 |
230 | 2 T3M1 |
Tools
- HX4 Screw driver
- HX2 Screw driver (for the pulley)
- Solder Iron
Step 1: Mount 2M1
The screws in the 1M1part a lose. I had to hold them with some tooth sticks into place. Then I mounted the 2M1 part on top of this.
Step 2: prepare the belt stretcher
This time, my printer could handle the hexagon hole. I did not have to modify the printed piece.
Step 3: Mounting the belt stretcher
The M4 screw inserts didn’t fit here, either. I had to glow them in again.
In the future, I have to find the correct inserts but for now, this is the way I’ll do it
Step 4: 3M2 Assembly
We have edited the 3M2 parts (3M2C & 3M2CC) to fit our stepper motor inside. For the detailed changes, have a look at hit blog post:
Unfortunately I have not time to finish this week’s blog post in time. I take this week off and I will describe the second half of the post in next weeks blog entry.
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