The cheap ones used some tricked up "C" clamps. There is at least a lap
or spline joint going on here, or you have just done a 45 degree cut,
and nailed/glued it together. The clamp just keeps it square while the
glue sets up.
That's always been my question about these clamps. Maybe use
double-stick tape to put some sacrificial wood pads under the clamp?
But they are never shown that way. Of course, if you were planning to
plane or sand after assembly, the marks might be shallow enough to get
Alex -- Replace "nospam" with "mail" to reply by email. Checked infrequently.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.