I am slightly resurrecting an older thread here but my copy of MEW286 only arrived today. Everything takes a little longer down here in this far corner of the Aunty Poddies – i.e. Western Australia!
Firstly thanks to Andrew for a very interesting article and please don't be deterred from further writing on related subjects. After 40 odd years of writing, editing and reading technical reports I can assure you that it is very rare to find one where the odd failure – from very minor to quite serious – has not slipped through somewhere in the process.
I don't have a Bridgeport but do have a clone on a slight dose of steroids. It weighs in at 1.5 tonnes and is powered by a 5 hp 3 phase motor. Purchased new some years ago it is of course what you might refer to as of Far Eastern origin, although here it is closer to north. Apart from the increase in size it is very similar to the Bridgeport and I have found the Bridgeport Series 1 manual ( available free to download on the Hardinge Bridgeport website ) a very useful source of information as the supplied 'manual' is a little brief.
My machine as supplied was relatively well featured with in-built coolant pump, Z and X axis power feed, 3 axis DRO, one shot lubrication and halogen work-light. Subsequent additions have included a riser block for the column and power feed for the Y axis. Also available are a slotting head attachment ( seriously expensive ) and horizontal milling attachment although I have not stretched to these as yet.
Compressed air powered drawbars are also available (mine has a NT40 spindle), although I would refer electric drive rather than air. I'll have to work on that.
The above is really just a way of saying that it is possible to feature one of these Asian origin machines to the same extent that Andrew has been able to do – assuming you chose the right one to start with, not all can be upgraded to the same extent, and have deep enough pockets.
The penalty is cost and weight – this is an industrial size machine and everything that accompanies it has an industrial size price tag. Not only that, everything is heavy – and getting heavier as I get older. Planning ahead for future heavy lifting is getting higher on my list of priorities every day!
So, for those who have either a genuine Bridgeport or a clone of any size, I highly recommend the Bridgeport manual. I have found it to be very relevant to my decidedly non-Bridgeport machine. You may also find it possible to obtain the accessories to enhance these clone machine as required.
Once again thank you for taking the time to prepare the article Andrew.
Pero