I spent weeks building a large rotisserie type holder, found it to be
too large, too fussy to set up. In less than an hour I threw together
this temporary one which has become the only one I use. Both front
support and back fold together for storage. Most chassis lay in with no
problem, sometimes I need additional support depending on what sticks up
on the chassis. It's only 9" wide by 9" deep, but will hold a pretty
large radio in perfect position on the bench. Ken