inter-built electronics

hi all!

newbie here so excuse if this had been asked before.

1. is it possible to use 1.4 ramps with another built like portabee? i'm not buying a kit so i have to make use of what's available for me.

2. is there any difference on the printing speed if your using one controller over another?

3. what controls the build size? and where can i tweak it?

thanks in advance. hope to contribute in this forum soon. :))


best regards,
f3rDz