Thread: Ozito SDS Rotary Hammer Drill

Couldn't help myself and splashed out on the Ozito Ozito Australia | Power Tools, Garden Tools, Sold through Bunnings Warehouse. Paid $79 which I can't compain about. Slightly surprised at 1yr replacement warranty when I thought most Ozito was 3 years?

Asked the Bunnings man on differences between rotary hammer drills, especially between Ozito "big cylinder" body style and more stream lined bodies like the Bosch http://www.bosch-pt.com.au/boptocs2-au/Product.jsp;jsessionid=34511CDF889A8016E3739DCC7D158FF7.worker1?country=AU〈=en&division=gw&ccat_id=101344&object_id=9879 which appears to be similar to the Trade Tools special I had my eye on: TradeTools Direct - Serious Tools...Seriously Discounted!. He was typically unhelpful, advising that the Bosch is for tradies and the Ozito for DIY'ers. Thanks mate. I tried again, asking which style has a more effective hammer mechanism. I think I was asking the wrong person.

I haven't opened the box yet and am thinking about ringing Trade Tools for comments about their special. After reading all the previous comments about the Ozito I know that I can't really go wrong paying $79 but can't help thinking that the $118 Trade Tools drill might be better in some way?

Originally Posted by zelk

... why do you put gap filler in the corner between the floor and wall before placing the skirting board?
Zelk

Couple of reasons.

The floor at our place has been tiled & the tiles didn't go right up to the wall.
This left a gap that had to be covered by the skirting.
In most places, it covered it well, in a few places, the gap was slightly bigger that the thickness of the skirting board so squeezing gap filler in there & then cleaning up after the skirting was fitted did the trick.

The other reasons are ants & water/moisture.
We live in a wet climate & sometimes we have storms that manage to get inside.
Any water on the floor can run along the grout lines in the tiles & get in that gap & cause mould/rot problems.
This can also happen from spills & simply mopping the floor.

As well ast the moisture, we have a problem with ants.
They come in from outside & use little gaps like that as 'ant highways' where they move about the house without being detected until they pop out to do a 'snatch n grab' raid on food.

When our new kitchen was installed, I sealed every corner & gap that I could get at as the cupboards where going in.
The kitchen cabinet installer was amazed, he had never thought of doing that.

Originally Posted by JohnMurray71

...splashed out on the Ozito Ozito Australia | Power Tools, Garden Tools, Sold through Bunnings Warehouse. Paid $79 ...

Yup, I picked up one yesterday to replace my $69 one.

Originally Posted by Cliff Rogers

Couple of reasons.

The floor at our place has been tiled & the tiles didn't go right up to the wall.
This left a gap that had to be covered by the skirting.
In most places, it covered it well, in a few places, the gap was slightly bigger that the thickness of the skirting board so squeezing gap filler in there & then cleaning up after the skirting was fitted did the trick.

The other reasons are ants & water/moisture.
We live in a wet climate & sometimes we have storms that manage to get inside.
Any water on the floor can run along the grout lines in the tiles & get in that gap & cause mould/rot problems.
This can also happen from spills & simply mopping the floor.

As well ast the moisture, we have a problem with ants.
They come in from outside & use little gaps like that as 'ant highways' where they move about the house without being detected until they pop out to do a 'snatch n grab' raid on food.

When our new kitchen was installed, I sealed every corner & gap that I could get at as the cupboards where going in.
The kitchen cabinet installer was amazed, he had never thought of doing that.

Thanks Cliff,
I knew there had to be a good reason.

In our house there is a gap between the floor boards and the wall as well as between the skirting boards and the floor. I notice that the carpet up against the skirting board gets blackens and I think it may because of dusty air circulating through this gap. I wonder if sealing the area would help.

Zelk

Originally Posted by zelk

... I think it may because of dusty air circulating through this gap. I wonder if sealing the area would help.

Zelk

Wouldn't hurt if you can spare the cost of the sealant & the time to do it.

Originally Posted by JohnMurray71

He was typically unhelpful, advising that the Bosch is for tradies and the Ozito for DIY'ers. Thanks mate. I tried again, asking which style has a more effective hammer mechanism. I think I was asking the wrong person.

The 'Duhhhhhh' was strong in that one.

The main difference is that the Ozito has a non-rotary option so you can use it as a small breaker or chisel, while the other two are simply hammer drills with no non-rotary option.

The hammer mechanism in the in-line drills is basically a serrated clutch like affair, with the 'hammer' effect being created by two disks ratcheting over each other; in the Ozito, it's a piston-like hammer driven directly from the rotation of the motor (in the same way that the piston in a car engine would be driven by the flywheel). See this thread for pics https://www.woodworkforums.com/f13/dr...-groggy-44544/

The hammer drills are measured in hits per minute; the Ozito in joules of impact force.

In practice, a hole that might take 30 seconds with the hammer drills will take about 10 seconds with the Ozito, and most of that time will be drilling slowly to get the hole correctly located so that when you step on the gas, the hole will be in the right spot.

Oh. The Ozito with hammer engaged won't drill holes smaller than about 5mm - even if you put smaller bits in, you still tend to end up with a 5mm hole due to its aggressive action.

Thanks MS. I ended up ringing Trade Tools and the bloke I spoke to was extremely helpful. He actually recommended the Ozito over their own drill which was something you wouldn't normally expect from a retailer.

So I have drilled a few holes and I have to admit I am pretty gob-smacked. A 10mm hole, with my Ryobi hammer drill, on low to medium revs, would take a good 10 minutes, stopping every minute or so to dip the bit into some water. The Ozito handled it in less than 5 seconds. All for the princely sum of $79.

Thanks to all the various contributors to the handful of threads discussing the Ozito. I love the search facility on this forum!

Originally Posted by Master Splinter

The 'Duhhhhhh' was strong in that one.
The hammer mechanism in the in-line drills is basically a serrated clutch like affair, with the 'hammer' effect being created by two disks ratcheting over each other; in the Ozito, it's a piston-like hammer driven directly from the rotation of the motor (in the same way that the piston in a car engine would be driven by the flywheel). See this thread for pics https://www.woodworkforums.com/f13/dr...-groggy-44544/

So none of the in-line drills have an a air chamber? I assume you mean these:
In-line drill:

Originally Posted by Master Splinter

The 'Duhhhhhh' was strong in that one.
Oh. The Ozito with hammer engaged won't drill holes smaller than about 5mm - even if you put smaller bits in, you still tend to end up with a 5mm hole due to its aggressive action.

Your exactly right. I recommend getting a bunch of half sizes when you go to get some other SDS drills. I drill 7mm when I want 8, and I drill 5.5 when I want 6.

Originally Posted by JohnMurray71

...I have drilled a few holes and I have to admit I am pretty gob-smacked. A 10mm hole, with my Ryobi hammer drill, on low to medium revs, would take a good 10 minutes, stopping every minute or so to dip the bit into some water. The Ozito handled it in less than 5 seconds. All for the princely sum of $79....

Impressive isn't it.

Originally Posted by JohnMurray71

So I have drilled a few holes and I have to admit I am pretty gob-smacked. A 10mm hole, with my Ryobi hammer drill, on low to medium revs, would take a good 10 minutes, stopping every minute or so to dip the bit into some water. The Ozito handled it in less than 5 seconds. All for the princely sum of $79.

Yep, the Rotary Hammers are pretty amazing aren't they? But heed a couple of warnings. The reason it takes 5 seconds is because the hammer action is far more aggressive than for impact drills. So beware:

- as mentioned above, small holes from about 5mm will end up slightly oversized. The diameter is pretty critical with things like dynabolts and screw (ajax) fasteners. I've had problems with 5mm holes. Never had any problems with 6.5mm holes.

- don't try drill holes near the corner or top of a brick wall. I unfortunately learned this the hard way, when 1/4 of a brick suddenly split and fell at my feet!

So RHD are amazing for big holes in the middle of solids walls and floors. Best to avoid them for delicate jobs though.

I've had good experiences with many of the staff at both TTD and H&F. Always depends on who you get, but many of them are at least as interested in your going home happy as making THAT sale. Afterall if they look after you once maybe next time you'll buy something dearer from THEM.

Also remember that bunnings has (had?) 600 mm bits for the ozito for about $30/pack of 3. I used one on E's wall and it worked well. I expect they might come in handy in future.