Cast iron VS Cast steel lathe compound slide
In this heat today i have been inside with the aircon on, reading up on Leblond catalogs and service manuals whilst controlling the kids. I have found a spare parts diagram of the compound i need to make for Blondie, and can scale it off the cross slide dimensions and draw it up.
In the 1920 catalog though, it says "The top slide is made of steel casting giving the necessary strength to T slot and preventing breakage at this point".
I would presume that all smaller lathes would have cast iron slides, but would 4E cast iron really not be strong enough on a big machine, or do you think this may have been a good idea back then simply because the strength of the cast iron was not as good at the time?
The sides of the slots scale at 1/2" thick and protrude 3/8" into the slots.
Any thoughts would be greatly appreciated.
Edit, pics added, to give you an idea the slide is about 12 1/2" long O/A and 5 1/2" wide
Just found a pic of a slide i remembered i kept, from the notorious "leSmurf"
1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.