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Hi Peter, Some good “rules of thumb” for designing with bolts. These were bestowed on me over 35 years of mechanical design and product development from gifted and generous mentors. 1. For steel

I’m still getting used to using my U3 kit, so my comments are based on limited experience. Mounted to the rear of the bed (by the two bolts) the milling attachment is pretty rigid and works well for

I have demoted the Fb1 mill to a drill press because the spindle is solid, so a cutter has more overhang and I don't have a fine feed attachment for the quill.? I bought an older Taig mill and

I have an Emco Fb1 mill.? That is a unimat 3 milling head and column attached to a 3 1/2 " square x-y milling table.? The head will tilt left and right, but not fore and aft. Chuck Daldry

If you do not already have a Uni 3, what are you proposing?? To buy the lathe and then the milling accessory?? The Uni 3 head, like the SL, has no guidance, so if you move it up/down, you lose

I don’t own a Unimat 3 but I have been looking at the Unimat 3 milling head and am intrigued by the adjustability and versatility of the milling head. It sure seems to be able to be configured in

Machinery's Handbook is a great source, but if you're going to get a used copy, newer editions will be better than older editions for metric info.? I have 4 or 5 editions, the oldest being from the

The DB etc is 25 mm by memory.

I have worked on BSA, Triumph and Norton Motorcycles for 50+ years now. I have a large selection of the BSW, BSF taps dies and tools to work on these. You can also add the BA and the BSC threads to

Stainless bolts in anything are prone to galling. They are also nothing like as strong as the best high tensile steel. I only use them if it's absolutely necessary, as in the water filters I'm working

When Mr Whitworth devised his system of screw threads he made the hexagon twice the size of the thread across the points - not across the flats. This means there is a factor of √3 involved, so the

That's great, thanks for the reply Carl.? Sounds like it's full of reading for the winter evenings... Cute toolbox !

Hello Peter: Machinery's Handbook also has Metric information, it will tell you USA measurements are based on the meter. Check Ebay or bookstores for a copy, even the early editions are useful. New

Thanks Phil for that and the tip. I’ll keep my eyes out for a copy.

Hi Peter, we have the book (Engineers Bible) over here in the UK it's about 80mm thick so it has every bit of information you could need in it keep a look out for a copy. On another note over the use

Thanks Bill. Is that an American book? ?We are (for our sins) now generally metric over here in the UK, I wonder if there is an equivalent?

Lay hands on a copy of Machinery's Handbook, and you will find several hundreds of pages of tables, discussion, and formulae. I keep picking at it, but I'm mathematically challenged, and unlikely to

Some queries about bolts. - common sense would say that a bolt should be softer than (or equal in hardness to) the thread that is is going in to, the bolt being replaceable where the threaded item is

SL is 25 mm dia John

Don’t know about the DB200 but the U3 is around 28mm in diameter.