Showing posts with label modification. Show all posts
Showing posts with label modification. Show all posts

Tuesday, March 1, 2011

Diy Linear slides

Finally back from a 3 month or longer break from the Reprap, stupid bootloader problems.... but I'm back with a vengeance!
Here are my slides for the X & Y axes
Heres a semi-tutorial/walk through for converting drawer slides to linear slides for a Repstrap
All the materials I used:
- Very large C-clamp
- Small glass or jar
- Screwdriver
-3/4 extension drawer slide
First what you have to do is take off the plastic stops on each side of the slide, one side you could easily pull off the stop but the other side I had to use a screwdriver to pry the stop off
Then I slid off the moving slide with the whole mechanism into a jar as to not lose any of the bearings
Now with the slide off I used the C-clamp to press down the metal tab that stops the slide so there is more space for the slide to move
With the stop down it is time to put the slide w/ bearings back into the 1st part of the slide, this is tricky because the bearings do not like to stay in the holding places they are supposed to be in so I would put them in one row at a time and slide to the next row
When you manage to get all the bearings in place you will have a working slide mechanism, although in order for it to actually move something you'll have to mount a mounting plate with some bolts on the sliding part and make a stop at the open end of the slide.
Now to make the frame for the Wolfstrap out of MDF!

Monday, August 23, 2010

Modified 2.3 Stepper Drivers 24v

I though that I might expand a little bit on the stepper drivers and the things that I did to modify them. First I changed the R5 and R8 resistors to 2.2k from 1k as to not fry the LEDs when I start to pulse the ABCD stepper channels. I also changed the sense resistor from a .25 ohm resistor to a .5 ohm resistor, I don't know if this was needed or if it was necessary, we will find out in the testing. Another thing that I made sure to do was to make all of the capacitors have a 50v rating (the reason that I used a through hole capacitor instead of a SMD cap) so they won't explode on me! Also if anybody knows if the sense resistors are required to be changed or if they are supposed to stay at .25 ohms then let me know

I will be testing the board and seeing if they work and doing another blog post after that so stay tuned!