Hi,
I'm trying to drill on HDB wall about 5 holes for a wall mounted DIY Project. After about 2cm deep, it gets harder to drill in. On the second try, the drill bits turn red hot. Is it because the drill bits not up for the job or is it the wall? Can anyone shed some light? Thank you.
I'm trying to drill on HDB wall about 5 holes for a wall mounted DIY Project. After about 2cm deep, it gets harder to drill in. On the second try, the drill bits turn red hot. Is it because the drill bits not up for the job or is it the wall? Can anyone shed some light? Thank you.