We wanted a glass fence for our balcony, without paying a fortune. So I got a few IKEA hardened glass table tops. These are the same type of glass used in expensive fences. To get a rough, industry look I got cheap iron L-beams to make the posts.
Two pieces are welded together to make an L-shaped post that is bolted to the floor. Put insulation strips on the side towards the glass to protect it. Hardened glass is strong but can crack buy small, sharp objects.
A third L-beam is bolted onto the post to clamp the glass tight. Corner posts are made the same way, but the clamping piece is put on the inner angel of the post. Ends towards a wall are simply two pieces of L-beam bolted to the wall.
Please note that you can’t cut hardened glass. You’ll have to find ready-made that have the right sizes. Also note that there may be building codes and other regulations that may affect your design and choice of materials. The ones I made are ok here in Sweden.
Our fence have been up for about 5 years without any problems. They total cost of material was about 1/7 of the offer from the fencing firm!