Page 1 of 1
Posted: Sun Oct 07, 2012 2:07 pm
by ant1909
How can I cut a 40mm deep groove that is 14mm wide or thereabouts in a concrete slab. I have 10 5m long grooves to cut. I thought I could use a floor saw but I cannot find anywhere where you can get blades that are thicker than 2-3mm. Do 14mm thick blades exist or is there a different way to do it?
Posted: Sun Oct 07, 2012 2:43 pm
by lutonlagerlout
never seen any blades that wide
if they exist they would cost a bomb
you may have to cut 2 parallel lines then chase the middle out 
phil from pulvex may have a solution
google pulvex diamond blades
LLL
Posted: Sun Oct 07, 2012 5:53 pm
by Dave_L
What may I ask is this for??
Posted: Sun Oct 07, 2012 7:51 pm
by GB_Groundworks
you should have cut them when pouring it or when it was green, but 14mm sounds like expansion material should have been used when pouring them the blanking piece removed and sealed.
or stack 4-5 blades together make sure the bolts long enough and they aren't rubbing on the guarding etc and lots of water and go real slow
Posted: Sun Oct 07, 2012 7:57 pm
by local patios and driveway
Imhabe a wall chaser, that would be ideal its bassically a 4in grinder with two blades and a dust extraction system, you still have to break out the center but would do the job. Are you laying pipes?
Posted: Sun Oct 07, 2012 8:38 pm
by digerjones
Posted: Mon Oct 08, 2012 7:25 am
by seanandruby
GB_Groundworks wrote:you should have cut them when pouring it or when it was green, but 14mm sounds like expansion material should have been used when pouring them the blanking piece removed and sealed.
or stack 4-5 blades together make sure the bolts long enough and they aren't rubbing on the guarding etc and lots of water and go real slow
bloody hell giles, you never fail to amaze me. Surely you don't expect people to do that? Apart from it being a potential health & safety hazard it is criminal. Cutters should only be used at full speed to. :O
Posted: Mon Oct 08, 2012 4:20 pm
by msh paving
10mm blades are avaible, used for cutting cable slots in asphalt/concrete for traffic signal cables/sensors, i have used one 10 years ago was not cheap but hired it by mm in a floor saw,
done even think of bolting blades together MSH 
Posted: Mon Oct 08, 2012 7:54 pm
by rab1
specialized core cutting company's have a concrete cutting tool basically like a chainsaw that have a width that your looking for but it wont be cheap. and never bolt blades for a saw together.
Posted: Mon Oct 08, 2012 8:09 pm
by GB_Groundworks
seanandruby wrote:GB_Groundworks wrote:you should have cut them when pouring it or when it was green, but 14mm sounds like expansion material should have been used when pouring them the blanking piece removed and sealed.
or stack 4-5 blades together make sure the bolts long enough and they aren't rubbing on the guarding etc and lots of water and go real slow
bloody hell giles, you never fail to amaze me. Surely you don't expect people to do that? Apart from it being a potential health & safety hazard it is criminal. Cutters should only be used at full speed to. :O
go real slow as in your forward movement cutting speed, oh wait lets use your logic yeah he should run round with the floor saw as fast as he can run thats real safe!
multiple stacked baldes are used to texture concrete for runways and other areas.
http://www.smithmfg.com/grooveit.php
Posted: Mon Oct 08, 2012 8:09 pm
by Mikey_C
msh paving wrote:done even think of bolting blades together
+1
Posted: Mon Oct 08, 2012 9:28 pm
by Dave_L
Nearby M5 has been diagnonally cut like that where there used to be a lot of standing water.
Posted: Mon Oct 08, 2012 9:29 pm
by rab1
Giles this type of blade is manufactured as a single unit, not 5no aldi speciels and a long bolt...
Posted: Mon Oct 08, 2012 10:44 pm
by seanandruby
floor saws, still saws, any saw is designed to run at full speed. Blades are made to be used at a set speed, not faster than it says on the label ie 500 rpm for a sthil saw. The blade you kindly posted is purpose made, as opposed to what you suggest, improvisation is a killer giles. I'm not having a go but i got slaughtered on here for posting on mick's thread and it got locked down because of the damage i could of caused the boss, your post could be equally, if not more, damaging if someone got maimd, or even killed.
Posted: Mon Oct 08, 2012 11:25 pm
by andpartington
problem solved ? ???
clicky
might need the labourer with a hose pipe ?
andy