Norman_E
Well-Known Member
I have two grey water holding tanks in the bilges. Both are made of 2mm thick 316 stainless steel. I decided that they need to have gauges fitted so that I can see how full they are. The problem is that the gauge I bought to see if it was practical needed a minimum 32mm diameter hole to insert it, plus 5 more holes tapped 5mm. I was not sure if I could cut out the 32mm hole with the tank in place. I bought a 32mm carbide tipped hole-saw on e-bay, delivered from China for about £3.
This week I am in Turkey on a cheap all inclusive week break at Antalya, so I rented a car and drove over to the boat to spend a day there and try and fit the tank sender. To my surprise after pre drilling a pilot hole using a decent high speed drill in my little 10.8 volt Parkside brand drill from Lidl (or was it Aldi?) the same drill powered the holesaw. I gave it short bursts to allow it and the drill to cool, and it cut through in a few minutes. Once the saw had broken through in places I levered the piece out with a screwdriver so that it did not fall in to the tank.
A surprisingly easy job, and I am now going to buy a sender and gauge for the other tank and wire it all up when I go to launch the boat in April.
This is the holesaw: http://www.ebay.co.uk/itm/311058645...49&var=610319621919&ssPageName=STRK:MEBIDX:IT
The sender is this type http://www.ebay.co.uk/itm/181227095104?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT
The gauge is this one http://www.ebay.co.uk/itm/110901300661?_trksid=p2059210.m2749.l2649&ssPageName=STRK:MEBIDX:IT
This week I am in Turkey on a cheap all inclusive week break at Antalya, so I rented a car and drove over to the boat to spend a day there and try and fit the tank sender. To my surprise after pre drilling a pilot hole using a decent high speed drill in my little 10.8 volt Parkside brand drill from Lidl (or was it Aldi?) the same drill powered the holesaw. I gave it short bursts to allow it and the drill to cool, and it cut through in a few minutes. Once the saw had broken through in places I levered the piece out with a screwdriver so that it did not fall in to the tank.
A surprisingly easy job, and I am now going to buy a sender and gauge for the other tank and wire it all up when I go to launch the boat in April.
This is the holesaw: http://www.ebay.co.uk/itm/311058645...49&var=610319621919&ssPageName=STRK:MEBIDX:IT
The sender is this type http://www.ebay.co.uk/itm/181227095104?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT
The gauge is this one http://www.ebay.co.uk/itm/110901300661?_trksid=p2059210.m2749.l2649&ssPageName=STRK:MEBIDX:IT
