OBSF-30 + PLexi

Not true, a simple electric drill with a depth gauge (standard plastic side attachment that comes with many standard electric drills) and a steady hand would do it no problem at all.

Even if you didn’t have a vice just clamp the ‘sandwich’ together tightly, stand it on some off-cut timber and use something weighty to keep it secure while drilling - use your imagination - bricks, blocks, books whatever.

Take it easy and drill slowly, keep steady and it will work - trust me !

thanks guys for all the replys, hope some people can benefit from all this info =)

i changed the my order to the screw-ins so no more snap-ons for me, i’ll see how i go