working on a reprap that was a repstrap

I started building a repstrap then I got parts for a few bucks to make a reprap, (printrbot ). I've heard that the printrbot has some stability issues. So I'm trying to build a reprap using printrbot printed parts and custom building the rest. I have prolly 10 different hardend steel rods. Some are in sets. I wanted to see if anyone had any ideas to build. A base. Also ANY IDEAS ON CUSTOM UPGRADES WOULD BE APPRECIATED. I have a temporary base setup so I can figure out the size I want

I started to re-design the base for My printrbot and I'm actually making some headway. Here is the base that I'm starting with. I currently just have the rest mocked up, no bearigs etc. I have also expanded the width of My printrbot to 14 and 1/2" the height is 19 and 1/2" I'm not sure how tall the final product will be. This is just how long My rods are before any adjustment. I also have 12mm rods that I might use for the bed which are 13" long. this gives me roughly 14 x 13 x 17" of usable print space. The whole reprap will be re-inforced to handle any unwanted movement. I also added anti-backlash for my z axis. I took this spring loaded anti backlash concept from the ones I designed for My cnc and the work quite well. If you have any input let me know. I will post pics ASAP. For some reason It's having issues.

Here is the start of My journey.

Here's the full pic.

I finally figured out the sagging motor issue that many printrbot builders have. I created a mount for the motor that creates perfect equal pressure. It also eliminates any lateral movement. Check out the pics. That problem is solved on to the next.

May your journey be long and scenic.