Onoff Posted June 30, 2018 Posted June 30, 2018 Mate's kitchen: The consensus on YouTube seems to be you punch a hole thru with a chisel and chip it out round by hand to fit the tap? Is that right or would a grit edge holesaw be better? He's putting it off as scared of buggering his sink! Cheers
nod Posted June 30, 2018 Posted June 30, 2018 On 30/06/2018 at 15:13, Onoff said: Mate's kitchen: The consensus on YouTube seems to be you punch a hole thru with a chisel and chip it out round by hand to fit the tap? Is that right or would a grit edge holesaw be better? He's putting it off as scared of buggering his sink! Cheers Expand I would us a diamond tiped core bit on slow speed in batterie driver It will cut through like butter Though the video looks effective But could be his third attempt ?
MikeSharp01 Posted June 30, 2018 Posted June 30, 2018 One small hole with ceramic drill bit then use a diamond abrafile to cut the hole. IF there are any weaknesses in the manufacturing the Chisle method will find them spectacularly. The Diamond saw method is so much lower energy and controllable. 1
PeterW Posted June 30, 2018 Posted June 30, 2018 Chisel is the manufacturers recommended method - they create a weak point in the sinks to allow for this. The sink material isn’t tough enough in the centre to take a drill bit and it may wander and a grit edge hole saw will skip on the glaze and scratch it ... 1
MikeSharp01 Posted June 30, 2018 Posted June 30, 2018 On 30/06/2018 at 17:32, PeterW said: Chisel is the manufacturers recommended method - they create a weak point in the sinks to allow for this. The sink material isn’t tough Expand If the hole is basically pre formed with only a glaze skin over the hole then the Chisle method has merit but of course the hole has then to go where put by manufacturer.
Onoff Posted June 30, 2018 Author Posted June 30, 2018 On 30/06/2018 at 17:32, PeterW said: Chisel is the manufacturers recommended method - they create a weak point in the sinks to allow for this. The sink material isn’t tough enough in the centre to take a drill bit and it may wander and a grit edge hole saw will skip on the glaze and scratch it ... Expand I was thinking to gently clamp a bit of timber underneath to centre the pilot of the hole saw and stop it wandering.
Nickfromwales Posted June 30, 2018 Posted June 30, 2018 On 30/06/2018 at 22:22, Onoff said: I was thinking to gently clamp a bit of timber underneath to centre the pilot of the hole saw and stop it wandering. Expand Prob is, your brain says use the diamond tipped drill. You convince yourself this is right. Wrong. The drill bit causes the glaze to shell off away from the hole edge and ruins the sink. Do as the manufacturers say and hit it out. Sharp, single taps almost a clout and bingo. It'll snap clean out. On 30/06/2018 at 22:19, MikeSharp01 said: If the hole is basically pre formed with only a glaze skin over the hole then the Chisle method has merit but of course the hole has then to go where put by manufacturer. Expand They kind of put it where it needs to go . I foubd a pin drift ( a flat faced centre punch ) the best. You won't smash the sink it's porcelain. If you cut with a holesaw you'll regret it. If you were supposed to cut with one the manufacturer would say so. They don't. 2
dogman Posted July 1, 2018 Posted July 1, 2018 Punch it out as it says. Just did mine and it was easy. Same sink by the look of it
MikeSharp01 Posted July 1, 2018 Posted July 1, 2018 On 30/06/2018 at 22:28, Nickfromwales said: They kind of put it where it needs to go Expand There you go thinking in straight lines again! If they put it where it needs to go why do they make you uncover it? Is it about size or could it be, for instance, to give the freedom to go elsewhere or, as on our kitchen sink, to have an addional tap for filtered water.
Onoff Posted July 1, 2018 Author Posted July 1, 2018 (edited) On 01/07/2018 at 08:58, MikeSharp01 said: There you go thinking in straight lines again! If they put it where it needs to go why do they make you uncover it? Is it about size or could it be, for instance, to give the freedom to go elsewhere or, as on our kitchen sink, to have an addional tap for filtered water. Expand Is the sink maybe reversible. As in drainer on right or left. Would that mean two overflows? Edited July 1, 2018 by Onoff 1
newhome Posted July 1, 2018 Posted July 1, 2018 On 01/07/2018 at 09:06, Onoff said: Is the sink maybe reversible. As in drainer on right or left. Would that mean two overflows? Expand Don’t the overflows tend to be on the side of reversible sinks?
Nickfromwales Posted July 1, 2018 Posted July 1, 2018 On 01/07/2018 at 09:06, Onoff said: Is the sink maybe reversible. As in drainer on right or left. Would that mean two overflows? Expand Reversible ones are why the knock out isn't done, but is half done both sides. Normally it's a centralised overflow so maters not which side the drainer is.
Onoff Posted July 1, 2018 Author Posted July 1, 2018 On 01/07/2018 at 11:14, Nickfromwales said: Reversible ones are why the knock out isn't done, but is half done both sides. Normally it's a centralised overflow so maters not which side the drainer is. Expand Overflow only on one side with this so if you turned the sink through 180deg the overflow would be at the front. CT1 or Sikaflex EBT or standard silicon to bed this into the worktop as it doesn't have any clips? Cheers
Onoff Posted July 2, 2018 Author Posted July 2, 2018 @Nickfromwales, sorry, should have tagged you on this question: CT1 or Sikaflex EBT or standard silicon to bed this into the worktop as it doesn't have any clips? Cheers
Nickfromwales Posted July 2, 2018 Posted July 2, 2018 Clear CT1 to bed it in for fixing purposes, and wipe back with the baby wipes. Have a look at the casting and see if the shadow gap isn't excessive, if it is then wipe a bit deeper and leave to dry. Then finish with a bead of ( cosmetic ) white silicone which can be refreshed when necessary. 1
Onoff Posted July 2, 2018 Author Posted July 2, 2018 (edited) Sink all in. Mid knocking hole etc. Done with a flat bottomed punch. Said he had to just grow some and go for it! Edited July 2, 2018 by Onoff
joe90 Posted July 3, 2018 Posted July 3, 2018 Just read this as I am about to fit my sink, takes a bit of guts to hit a new expensive sink with a hammer ?. But here goes !,,,,,,,,,,,,,,,,,,,,,,,
Onoff Posted July 3, 2018 Author Posted July 3, 2018 (edited) On 03/07/2018 at 12:19, joe90 said: Just read this as I am about to fit my sink, takes a bit of guts to hit a new expensive sink with a hammer ?. But here goes !,,,,,,,,,,,,,,,,,,,,,,, Expand As least you know it can be done like they say! I'd hit the weak point with the punch NOT the hammer! Edited July 3, 2018 by Onoff 1
newhome Posted July 3, 2018 Posted July 3, 2018 Hubby did this in the last house. Just hammered it out. Guess he was expecting me to whip the credit card out if it got buggered ?
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