Just fyi in case anyone runs into why they can't mount their Y screw.

My Ballscrew came over a little 1/4 inch too long and was hitting the X2 Mill base, after a quick grind, all was well.

Also CNC Fusion should ship Spanners for the spanner nut, as I ended up using large tools to get that nut on. But ended with teeth groves on the end of the shaft where I had to grind out smooth before I was able to attached the Heli-Cal coupling. From other threads I've read, CNC Fusion know about this, but I don't know why they don't fix it. I can't image it being an expensive tool. I would have paid the difference to have it in the kit.

My kit I just got from them fit my X2 perfect. Although I've seen HF mill bases have large amounts of flash on them. I had to grind mine back because nothing fit it really. Including the stock screw would bind occasionally. Their kits was top quality on my install.

My Ballscrew came over a little 1/4 inch too long and was hitting the X2 Mill base, after a quick grind, all was well.

I hope you didn't grind that 1/4" off of the BALLSCREW! If you did that, then you cut down the already miniscule X2 Y travel by 1/2 inch. Better to grind the base to make room for the ball screw end.

Also, you may need to install some kind of "hard stop" to prevent the Y ballscrew from coming out of the ball nut and spilling bearings all over the floor.

CR.

I had the same problem with Hoss' CNC conversion. The Y screw was too long according to his drawings. I just ground out a pocket in the base for the screw to fit. I think there is just a lot of variance in the 'flashing' of these as TheWolf stated.

I hope you didn't grind that 1/4" off of the BALLSCREW! If you did that, then you cut down the already miniscule X2 Y travel by 1/2 inch. Better to grind the base to make room for the ball screw end.

Also, you may need to install some kind of "hard stop" to prevent the Y ballscrew from coming out of the ball nut and spilling bearings all over the floor.

CR.

Yeah I didn't think about that until after I did it :(
Oh well...

no need for hard stop, it hits the base and stops on it's own.

...no need for hard stop, it hits the base and stops on it's own.

Yeah, you're right! Been a while since I was inside the X2. I was thinking of the X3.

CR.