I totally agree, Chip. NEVER use cinderblocks (aka concrete blocs ... or aka 'breeze-block' in the UK) to support anything... I've seen them shatter with near-disasterous results... even when they might seem to be holding fine, in a minute or even in a week or month's time they could just literally blow up or crush. Very nasty stuff.Chip Hindes wrote:You're asking for trouble, using concrete blocks to support anything other than the foundation of your house. Their not designed to support, cars, boats, or anything else of that nature.
These days you can buy a reasonably good set of jack stands on the cheap... so buy'em! Or make a proper custom-fit stand out of stout lumber. But for god's sake don't use those blocks.