Steve,
There is no definite object in mind. Today I've been doodling various gear profiles, just as a test piece. I'm loathe to start using it with water until I've finished one or two cosmetic changes. Several years ago I bent up replacements for several of the panels that were missing. Having now sorted that sliding cover it's time the tin work got a coat of paint ! I ordered up a RAL colour chart, and now it's arrived went to trying to match the grey it's mainly painted, but various bits are different greys

I brought in the heavy guns and got the wife to decide (RAL 7044 silk grey) and placed a paint order today. It all needs etch primer as most is galvanised sheet with some aluminium.
I've been spending my time trying to sort out my 'DNC' issues - DNC refers to the coupling of the machine to a PC via (usually) RS232.
Firstly physically: up until now I've have cables trailing over the floor - I've installed conduit uprights to take the cable up into the gods and thence wired back to my desk avoiding walk ways.
Secondly software wise. I have three CNC machines and was hoping to use a single serial port on the PC via a switch box. However the DNC software, which holds configurations for each machine (which have widely different configs) insists that each have a separate COM port number.
Rather unwillingly, as the software vendors are not answering queries, I've bought a 'USB to four Serial Port' adaptor 'Hydra Cable'. Installing it proved a nightmare with ports ending up with silly numbers. I solved that (hidden previously installed USB things needed purging) only to find that it's operation was inconsistent to say the least, with ports sometimes working and other times not.
http://www.ebay.co.uk/itm/330820909340?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AITThe 'Hydra Cable' is on it's way back to the supplier and a (hopefully) more professional version ordered:
http://www.ebay.co.uk/itm/361060354571?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AITTime only will tell

Back to your question - Yes I'm sure that the profile of a Multifix holder could be cut relatively easily - It would be a very slow way of doing it - presumably they only need to be EN8 or some such decent engineering steel that could be cut on a CNC mill. Now if you needed it in tool steel in the hardened state it would be a good choice