We've made some changes to the way machines work:
Good news! You can now craft or use other machines while a machine is going. And the tradeoff? Most machine actions take much longer (e.g., making a board takes 5 seconds, a girder 30 seconds). But, there's more good news: each Machine "remembers" what each player has to collect from it and will remind you to collect every time you come close AND others can use the machine while its still waiting for you to collect from it.
Note: Machines never "forget" what its owner has collect (owner = player whose street the machine is on) but they do "forget" the things made by non-owners if they haven't picked it up in 6 game days, or if the owner disassembles the machine (the owner gets a warning if there's other players' stuff in it).
Oh, and there is also more good news: machine Fuel capacity is now 200 (up from 100) and making Urth Blocks and Fuel Cells no longer takes energy (it used to take 5 and 2, respectively).