OREGON TATTOO 248 2026 PRACTICE TEST
SOLVED RESPONSES
◉ when the armature bar is flat on the front coil what is the smallest
gap above the rear coil? Answer: .10
◉ what does a smaller gap above the rear coil cause? Answer: more
power
◉ what should armature bars be made of? Answer: plain steel
◉ how does the machine run if too much of the coil core is showing?
Answer: hot
◉ what type of edges should your contact screw have? Answer:
rounded and smooth
◉ where in on the front spring should the contact screw be hitting?
Answer: front or end of spring
◉ what length of spring would run faster Answer: short spring with
a high angle
,◉ what type of metal should the contact screw be made of to have
the highest conductivity Answer: brass
◉ how does the armature bar hit the front coil core Answer: flat full
contact
◉ what do you want the frame on your tattoo machine to be?
Answer: nonconductive
◉ what happens when your machine is conductive or electrified
Answer: it stays on with the armature bar sticking to the coils
◉ what diameter should your binding post be Answer: 5/16ths
◉ what happens if u use a steel contact screw? Answer: can cause
sparks
◉ when setting up your machine why would you snug down the eye
of the needle bar Answer: prevent weak jumpy lines
◉ why is a one piece contact screw the best choice Answer: adding
things can cause vibration
, ◉ what are two advantages of a brass contact screw Answer: 100%
conductive and it keeps it shape for longer than other metals
◉ how much if the contact screw needs to be touching the front
spring ? Answer: tiny contact area
◉ why don't you use a coated spring Answer: coating wears away
and causes a bad connection
◉ what kind of reaction do you expect from a machine with a very
low spring angle? Answer: weak and spongey
◉ which type of machine benefits best from a shorter spring?
Answer: liner
◉ which spring is most important for tuning the machine Answer:
rear
◉ a machine is hard hitting and fast running moves the needle in
and out of the skin so fast that Answer: not enough pigment is left
behind
SOLVED RESPONSES
◉ when the armature bar is flat on the front coil what is the smallest
gap above the rear coil? Answer: .10
◉ what does a smaller gap above the rear coil cause? Answer: more
power
◉ what should armature bars be made of? Answer: plain steel
◉ how does the machine run if too much of the coil core is showing?
Answer: hot
◉ what type of edges should your contact screw have? Answer:
rounded and smooth
◉ where in on the front spring should the contact screw be hitting?
Answer: front or end of spring
◉ what length of spring would run faster Answer: short spring with
a high angle
,◉ what type of metal should the contact screw be made of to have
the highest conductivity Answer: brass
◉ how does the armature bar hit the front coil core Answer: flat full
contact
◉ what do you want the frame on your tattoo machine to be?
Answer: nonconductive
◉ what happens when your machine is conductive or electrified
Answer: it stays on with the armature bar sticking to the coils
◉ what diameter should your binding post be Answer: 5/16ths
◉ what happens if u use a steel contact screw? Answer: can cause
sparks
◉ when setting up your machine why would you snug down the eye
of the needle bar Answer: prevent weak jumpy lines
◉ why is a one piece contact screw the best choice Answer: adding
things can cause vibration
, ◉ what are two advantages of a brass contact screw Answer: 100%
conductive and it keeps it shape for longer than other metals
◉ how much if the contact screw needs to be touching the front
spring ? Answer: tiny contact area
◉ why don't you use a coated spring Answer: coating wears away
and causes a bad connection
◉ what kind of reaction do you expect from a machine with a very
low spring angle? Answer: weak and spongey
◉ which type of machine benefits best from a shorter spring?
Answer: liner
◉ which spring is most important for tuning the machine Answer:
rear
◉ a machine is hard hitting and fast running moves the needle in
and out of the skin so fast that Answer: not enough pigment is left
behind
