Rostock Max Assembly Guide
50
18 – Installing the Belts!
18.1 - To begin, route the Z axis belt (or whatever axis you choose to begin with) from the top of
the base plate, down below the bottom idler pulleys. Draw most of the belt through.
Figure 79 - Initial Belt Routing
18.2 - Special care must be taken with this stage of the belt routing. You need to ensure that
the belt passes
between
the two lower idler pulleys. If the belt passes to the outside of the “inner”
pulley, the belt will rub against the belt notch in the top plate of the base. (I know it will because I
screwed it up the first time and didn’t realize it until I was finished with the mechanical assembly of the
whole machine!)
18.3 - Figure 79 above will show you what it should look like from the outside when you're done
with this step. Note that the belt teeth must be facing "in" towards the rail. Make sure while pulling the
belt that it doesn’t engage the drive pulley that’s installed on the stepper motor – you don’t want to
spin the motor by hand.
18.4 - Attach the short end of the belt to the Cheapskate. Start by removing the lower belt
clamp - you'll need it out of the way as you'll need to fish the belt end through the small slot that's right
above the clamp. I'd really suggest laying the machine down in order to do this as it makes it a bit
easier. In order to fish the belt through that tiny slot, you'll need to find a large paper clip.
18.5 - Straighten it out and then bend a small "L" on one end. You'll use that to snare the belt
tip to drag it through that tiny, tiny little slot. :) Note that I don't actually know how well I
would have fished the belt with the paper clip. I cheated and used a tiny set of forceps to do the job. :)
Take care to not twist the belt!
