Hi everyone, I was one of the people who got a frakenbot kit from @Brook_Drumm so I thought I would share my progress with you guys, the first picture is what it may look like when finished, and the second one is what I have done, not as great at designing as the other people with these kits, but I try.
@Alex_Wiebe @Griffin_Paquette You guys seem to be interested in this stuff.
Any feedback would be appreciated, I have never built a printer from printed parts, much less designed one.
Just one piece of constructive criticism, when I started my Frankenbot build I wanted to position my rods like you did, which took up the mounting holes. When you added the threaded mounts, they weren’t properly supported which is why they are sagging. I’d add a brace to the back where you can mount both the rods and the threaded mount. They both need to be super stiff to get proper prints out of them. Look back at my earlier posts and you can see how I was doing the same thing with printed parts.
You also don’t want your smooth rod sliding on a printed part like that as it will stress the motors more.
If you’re willing to lose a little build area, then you could mount your threaded motors inside the smooth rods and between the other two. It would make your current system work and be less parts.
Go get some aluminum L bars from home depot and use it to stiffen that up more. I also agree with the above comments. Go for more like Coreyx
Look at current designs and analyze every moving part, tensioned part, etc. Think about how things are braced (or not), and what direction those forces are in, and how that force affects the stability of the machine, how the vibrations could travel. Weight can play a big part, keep the moving mass low.
@Griffin_Paquette My smooth rods do not actually touch the printed parts, the circles are bigger then them, I may do the motor repositioning, I will have to see how much build area I will get then
Your doing great! Just keep improving it. You are going to learn so much!! Don’t be tempted by super large build volume. Start with rigidity as the goal and give up a little volume. You can always go bigger 
Brook
Actually, bigger becomes much more complex, with more things to worry about. So stick to small, at least until you gain the experience and knowledge.
@Brook_Drumm makes a great point. I would trade build area for a very stiff/rigid frame any day. In the end it just means that you are going to get better print quality.
@Brook_Drumm @Stephanie_A Thanks for the kind words, I don’t plan on making it super big yet, I only have that 6x6 inch bed, that will be big enough for a while. My Makers kit will feel tiny compared to that lol, I don’t think I need to print stuff much bigger then that, but if I do, I think I will still have enough room for a 8x8 bed. Even if I do eventually upgrade, the first thing I will probably get is a metal hotend.
@Griffin_Paquette Yeah. The plan is 6x6, with a possible later upgrade to 8x8, but I think my z axis will be higher then the x and y axis so the finished bot could be like 6x6x8 or 6x6x10
That gives me some room to expand if I need to
