I ned to grind down some concrete high spots to get a better level before I tile, mainly a sand and cement mix without any pebbles. What is the best attachment to use with my 115mm angle grinder. My research on here leads me to a Silicon carbide product, would this be any use --here as I already have the backing pad. I also have a bosch Pex 125 sander with velcro pad I can use, or do I go for a diamond disc/pad.
F
Flintstone
Have you got some dust extraction that is the question?
L
LM
Silicon carbide products are a waste of time for this type of task, get something like below. But as already stated dust extraction is paramount this will. E a big health risk.
There was nothing below - what were you linking to ?.
The area is outside and I was planing on attaching a heavy duty vacuum cleaner either with a shroud - home made or positioning the vacume end near the flow of dust
L
LM
One of these would be better, I got there eventually 😕
F
Flintstone
That will certainly do it, but there’s no holding the vac near by, you need to get a propper cowl and suitable vac
W
WetSaw
It is outside so he could just wait for a windy day!
F
Flintstone
Even better a rainy windy day
I
Italy
Thanks chaps.The concrete area is normal mix with stones that was here when we brought but was a rough mess so I top dressed it with a sand and cement mix so do I actually need such an aggressive tool? That screwfix one unfortunately will not fit as it is a 125mm and my grinder is 115mm.
Can anyone recommend an under £15 one 115mm, I have just been looking and found some as low as £8 on ebay.
Is there anything similar that I could use on my 125mm orbital sander.
The problem with angle grinder is it only has one speed which throws out all the dust but the bosh sander I can control at a lower speed.
Can anyone recommend an under £15 one 115mm, I have just been looking and found some as low as £8 on ebay.
Is there anything similar that I could use on my 125mm orbital sander.
The problem with angle grinder is it only has one speed which throws out all the dust but the bosh sander I can control at a lower speed.
L
LM
You may be better simply hiring all you need for the day, vacuum included.
Thanks but I have a vac for the job and I may only need the the pad for 1 hour and then I do not mind it sitting in my tool box for a few years before I need it again. Equally I do not mind a very cheap one that will only last the one job.
What I am worried about is a very cheap one disintegrating itself rather than the concrete..
What I am worried about is a very cheap one disintegrating itself rather than the concrete..
O
Old Mod
Not even a Cheap grinding cup will be weaker than the concrete, they’re very aggressive.
Should really be used with a variable speed grinder with high torque, something like a flex.
A lot of 125 discs will fit inside a 115 cowl.
I put 125 discs on my 115 grinder quite frequently.
There’s no real shortcuts unless you try going at it with an SDS drill with a scutching comb.
Should really be used with a variable speed grinder with high torque, something like a flex.
A lot of 125 discs will fit inside a 115 cowl.
I put 125 discs on my 115 grinder quite frequently.
There’s no real shortcuts unless you try going at it with an SDS drill with a scutching comb.
I never knew you could get variable speed ones but its a long time since I brought one you mean like this Like this one
or are there trigger sensitive ones.
or are there trigger sensitive ones.
O
Old Mod
Yes like that one, however, that is NOT variable speed
This fits a 115 standard grinder.
Grinding cup
Odd, I googled variable speed and it came up with that one but it was an old BandQ page where it was only £33 and in the specs it says
3000-11000rpm
but all stores say not stocked, guesing the offer is off because I end up finding it at £43 but no mention of 3000-11000 BUT the vid shows a speed control but you can not see it on the static picture. Here is a screen shot of the vid . Thanks for the link I shop in toolstation a lot.
3000-11000rpm
but all stores say not stocked, guesing the offer is off because I end up finding it at £43 but no mention of 3000-11000 BUT the vid shows a speed control but you can not see it on the static picture. Here is a screen shot of the vid . Thanks for the link I shop in toolstation a lot.
Ok an update from me, that screwfix cup was too big so I fixed it by buying a bigger angle grinder 😀 THIS ONE
slow start and variable speed.
As for the dust ---- whatch this space as I am making a DIY shroud and a cyclone dust collector.
D
Deleted member 49260
Oh I've got to make one of these!
The problem is that the black hose attachment has come off from the shroud, this bit -
I used gluesticks but they did last the job out I need a better glue.
Also the baffle is meant to stop dust going up the exit hose to the vacuum but it may of worked but also acted as a shelf to collect dust, I think I will make the curved holes in it bigger. The idea is that it is a round disk under the vacuum hose here it is which is the bottom of the top bucket with the curved holes cut out so the dust on the outside vortex drops through to the lower bucket below.
I used gluesticks but they did last the job out I need a better glue.
Also the baffle is meant to stop dust going up the exit hose to the vacuum but it may of worked but also acted as a shelf to collect dust, I think I will make the curved holes in it bigger. The idea is that it is a round disk under the vacuum hose here it is which is the bottom of the top bucket with the curved holes cut out so the dust on the outside vortex drops through to the lower bucket below.
There are similar tiling threads here
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