I have a predicament, I am putting up a shelf into the wall.
The wall is plaster, and then hollow and then concrete. I have screws with toggle bolts on them.
The 2 inch screw with the toggle bolt was too short to get the toggle bolt inside the plaster to the hollow part.
The 3 inch screw with the toggle bolt is too long because it hits the concrete. But the toggle bolt will reach into the hollow part.
How do I approach this dilemma? Do I need to drill into the concrete somehow? I think my current drillbit is incorrect for doing this, but I'm not sure.
Insight appreciated
Best Answer
Are you comfortable with cutting the bolt to a length between 2" and 3"? That would be simplest.
Another possibility would be to use another piece of wood between your shelf and the wall to create more thickness for the 3" bolts.
If the concrete is actually concrete block, you can drill into that quite easily with a masonry bit from your local hardware store. If it is an actual poured concrete wall, best not to bother.
ADDED:
To shorten the bolts:
A) Take the bolt to a hardware store, tell someone you want the same bolt but in a 2.5" length - this is likely the easiest thing.
B) Cut the bolts: