Hi there!
I had one of this great core drills for a while, it is a kbm 50Q old style no electronics. Recently had it serviced and found no faults besides the cable that was replaced and the makeshift handles replaced with original ones.
I have recently used it to drill a series of 28 mm and 35 mm holes in PFC with no trouble at all.
I have since sent the PFC for galvanizing and after the process, have painted the channels with Dulux luxepoxy4, a two pack paint that is a real charm.
When I went to install the channels, two out of the 16 holes needed to be corrected some 5 mm. No problem I thought, got the drill, positioned it and switched the magnet on and as soon as I lowered the broach the whole contraption moved. What? I thought, didn't I switch the magnet on? Tried once more with the same result. Ended up using a die grinder since fortunately had enough hose to reach the job.
So the question to the metal work experts on the forum is ... how is it possible that a coat of paint, conceded, a rather slick and slippery paint would counteract the streanght of the electromagnet? Is there something wrong with it? May be got weaker with time?
Your reply is appreciated.
I had one of this great core drills for a while, it is a kbm 50Q old style no electronics. Recently had it serviced and found no faults besides the cable that was replaced and the makeshift handles replaced with original ones.
I have recently used it to drill a series of 28 mm and 35 mm holes in PFC with no trouble at all.
I have since sent the PFC for galvanizing and after the process, have painted the channels with Dulux luxepoxy4, a two pack paint that is a real charm.
When I went to install the channels, two out of the 16 holes needed to be corrected some 5 mm. No problem I thought, got the drill, positioned it and switched the magnet on and as soon as I lowered the broach the whole contraption moved. What? I thought, didn't I switch the magnet on? Tried once more with the same result. Ended up using a die grinder since fortunately had enough hose to reach the job.
So the question to the metal work experts on the forum is ... how is it possible that a coat of paint, conceded, a rather slick and slippery paint would counteract the streanght of the electromagnet? Is there something wrong with it? May be got weaker with time?
Your reply is appreciated.
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