Hi guys! The market is really crazy. As professional tiler I make a large number of holes in tiles. In the beginning of my job I started using DIY core bits, because my idea was to save money purchasing chinese or other cheaper tools. I was young and I was stupid :-)
During my job I understood that these cheaper drilling tools work for 3 or 5 holes maximum. After that holes I had to purchase another core bits with also a great risk to break the tile.
Due to this experience, I decided to spend more money to buy professional core bits and the results was good. 50 or more holes in very hard gres porcelain with a single tools, no one problem with the tile. Obviousy I made my calculation in order to save my money:
to make 50 holes with cheaper core bits I need 10 x 5$ core bits - total amount 50 USD
to make 50 holes with professional core bits I need 1 x 24$ core bits - total amount 24 USD!!!!
I'm now using only professional core bits Bosch, Hilti, Montolit or other brands but for sure top quality brands because I want to make a good job and for sure to save my money.
Now when I see my joung colleagues start to work with that tools I laugh...they will learn alone with time that chinese tools in reality aren't cheaper tools... it is necessary to make a complete calculation in order to understand the real total cost...
