You've totally missed the point Derek; square nuts do not require a spanner to prevent them rotating like hex nuts do when you tighten the bolts (assuming you make the nut recesses approximately the same dimensions as the nuts). Maybe you have some ulterior motive to weigh down that end of your bench!
Originally Posted by derekcohen
Even if you were installing the bolts and nuts with the bench the right way up, a pencil would stop the nut falling out of the recess until you got the bolt started. Putting a really good point on the bolts (like the ones in the image I posted above) will make aligning the bolt and nut easier again.
I know you believe you understand what you think I wrote, but I'm not sure you realize that what you just read is not what I meant.