Size of the Front Spring

As mentioned earlier the front spring length can be changed to
achieve different results in the tuning of the tattoo machine. The
rule of thumb here is that the shorter the front spring, the stiffer
it will be. The shorter the front spring, then the further back the
contact’s point will have to be as well. This will make your machine
run faster. The smaller springs are typically seen on what
is referred to as a “cut back” machine. This is the preferred
setup for artists as a liner configuration because it tends to run a
little faster.