How to build a Prusa Mendel (metric): Assembled bottom plate + belt + y-axis motor

Installed the bottom plate + belt + y-axis motor.

Here are some of the issues i ran into.

I ordered m3 nylock nuts but not the M3 nuts. I ran into a lot of issues due to this.
I need to order M3 nuts...
I am able to manage to install y-axis motor using the hardware i bought from HomeDepot. I need to get the M3 nuts to rectify the situation.

Here are some of the images..

Bottom plate before gluing to the bearings

View from below -showing the bearings beneath the bottom plate

See the X-mark on the bushing. The bushings are uneven, so i need to try a different sides to keep the bottom plate without wobbling

Closeup view the bushings below the bottom plate


Here is mess i made on the pulley. Because i haven't ordered the m3 nuts, i bought #4-40 flat head screw + nuts from HomeDepot and try to fit the nut into the pulley. As the nut, doesn't fit into the slot, i used soldering gun to widen the seating..I need to replace this, when i receive M3 nuts.

The above image showing the pulley + M3 x 10 bolt + #4-40 nut didn't work on the motor, because the M3 x 10 bolt head it popping out of the pulley and it is not allowing the motor to rotate.

So this time, i bought #4-40 1/4 inch and tried to install the motor. See the image below.

I bought the following hardware...


Here is the hardware i bought from HomeDepot. #4-40 x 1/2 inch for M3 nut

#4-40 1/2 inch should work, but the screw head is protruding from the pulley, so i bought #4-40-1/4 inch screw + nut... see the image below.

This time it worked...Able to install the y-axis motor finally.

Moral of the story, buy the correct size screws and Nuts (first time itself)

#6-32 x 1-1/4 inch to use a hinge to hang the idler end of the extruder. I don't have the image, but i will add it later.