Spot the difference

dewaltdisney · Post by **dewaltdisney** » Fri Oct 30, 2020 2:04 pm

Can you tell which is harder? Is it a Silverline masonary bit or English Cheddar. I found out this morning in a five minute job that wasn't. Mrs D wanted a wall mounted multi shelf unit that will be used for photos and sh*t that women like. It is an Ikea unit that matches the other stuff in what we call our day room but it is just a small room we use occasionally when people we dont know well call or to use the telly if we want to watch something different. Anyway, I digress. I built the unit that was actually a very easy to assemble good design. I place it on my tool box against the wall and get it all level and to clear the skirting and mark the drill points. I grab my bag of rawl plugs and get a couple out noting a 7mm drill required. I bought a Silverline set for a fiver somewhere and use the 7mm to drill the first hole with my cordless. As the walls are block, the first goes in quite easily. The second hits a bloody lintel that is over the door in the hall next to the adjacent partition wall. Of course the six inches I have allowed is not enough to clear it and the drill bit starts bouncing and then bends under my hand pressure. FFS.

I think I will move over to my SDS+ but out of all the bits I have no SDS 7mm grrrr. After a fruitless search I resign myself to a trip to Screwfix. An hour later back with a new Bosch 7mm bit. Drill the hole which is now a bit belled at the mouth so I have to wrap some tape packing around the plug. After that it all goes up okay but it has taken me about three hours to do a job that should have been done in under one.

Of course it is my fault for buying a gash set of drill bits that will work to a point but not touch anything harder than polystyrene.

There is no such thing as an easy job.

DWD

ahfix · Post by **ahfix** » Fri Oct 30, 2020 3:27 pm

Are these the drill bits you bought?

: cs.jpg (45.66 KiB) Viewed 4261 times

Tip, keep them chilled, they last longer.

ah

dewaltdisney · Post by **dewaltdisney** » Fri Oct 30, 2020 4:30 pm

They are much tougher

DWD

Razor · Post by **Razor** » Fri Oct 30, 2020 5:14 pm

You should try the cheap bits with a really good sds. The spades literally snap the first time they touch the wall

The bosch and dewalt extremes are my faves. The dewalts are particularly good

Job and Knock · Post by **Job and Knock** » Fri Oct 30, 2020 7:56 pm

Hilti are better, but I only get work to pay for them! Heller TriJets are also very good and the quad point Milwaukee (try Tool Station) aren't bad, either

Job and Knock · Post by **Job and Knock** » Fri Oct 30, 2020 8:36 pm

Re-Silverline, everything Silverline I've tried has been utter garbage - from saw blades which are blunt straight out of the packet and then shed half their teeth if they hit a small nail to SDS bits which are so bent when new that you might as well fit them on a helicopter as use them in a drill.

Argyll · Post by **Argyll** » Fri Oct 30, 2020 9:00 pm

The guy at Toolstation knows that if it's Silverline I won't take it. Those Milwaukee MX4 drill bits are excellent but very difficult to source.