Quote Originally Posted by Davek0974 View Post
I thought you were converting an AMAT25LV ?

My Bridgeport CNC conversion was the best thing i ever did, it makes it a much more useful machine. The backlash i do have comes mainly from the screw thrust bearings - in the end i bought new units here and it helped massively, not cheap though. The next is screw nut slop - I just fitted a standard Bridgeport conversion screw set from the USA, its good but not excellent. I have less than 0.1mm backlash in both axes and i don't think thats too bad for an old girl :)
Sorry not being clear am I. I have a series 1 Bridgeport but have bought the AMAT to convert to CNC. Sadly my Bridgeport, even though its a 1981 model is a bit worn. I can't adjust the gibs to acceptable play for a CNC machine without the ways tightening at the outer ends. Also I really wanted something I could enclose, the Bridgeport fills the shop with chips, and I'd didn't want to add to it by getting the coolant working too. I'll certainly keep it for general use where the part is not complex or for sizing stock for the AMAT etc.
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I read a load online and the general impression I got was converting a series 1 wasn't the best way to go, sounds like you disagree although perhaps you have a later model? I could certainly live with 0.1mm with the parts I make, not bad at all for a Series 1. I guess the bits were pretty pricey though?