Bending EMT is the first hands-on skill most electrical apprentices learn, and it is
almost entirely about marking correctly. The bender does the bending; your
job is the tape measure. Get the marks right and the bend takes care of itself.
What you need
A hand bender matched to your conduit size. A 1/2" bender for
1/2" EMT — the size is stamped on the bender head. The wrong size kinks the
conduit.
Tape measure, permanent marker, and a level.
A way to cut: hacksaw or tubing cutter — plus a reamer or file to deburr the
cut end. A sharp inside edge will slice wire insulation during the pull.
Gloves and eye protection for cutting.
Reading your bender
Every hand bender head carries the same vocabulary: the arrow (where
you line up offset and stub marks), the degree scale (bend to the
number, not to feel), and the take-up stamped on the head — how
far the bend starts before your mark. For 1/2" EMT the standard take-up is 5",
3/4" is 6", 1" is 8". Always confirm against your own bender.
Your first bend: a 90° stub-up
Decide the stub height — say 12" with 1/2" EMT.
Mark at 12" − 5" (take-up) = 7" from the end of
the conduit.
Line the bender's arrow up with the mark. Keep firm, steady foot pressure so the
conduit cannot walk.
Bend with smooth strokes to 90° on the degree scale.
Check with a square: the back of the bend should sit at exactly 12".
That is the whole skill in miniature — every fancier bend is this same idea
with more marks.
Safety habits that save conduit (and fingers)
Practice on scrap first. Every bender bends a little differently;
one test bend on waste conduit is cheaper than one miscut stick.
Never force a bend. If the conduit starts to flatten or kink, stop.
A kinked stick is scrap — and kinked conduit has to come back out of the wall.
Keep your footing. Bending is a whole-body motion; a slipping foot
means a slipping mark.
Ream every cut. It takes ten seconds and protects every wire you
will ever pull through that conduit.
Bend before you cut to final length when a stick has multiple bends
— shrink and gain are easier to account for on a long stick than a short one.
What to learn next
Once the 90° feels natural: offsets (the everyday bend), then 3-point saddles,
then stub-ups to exact heights on the first try. Each has a dedicated calculator and
guide on this site — start with the offset, since it teaches multipliers and
shrink, the two ideas behind everything else.