The bill is now available via search for "bump", even though it wasn't a few hours ago when I searched earlier today:
https://www.capitol.hawaii.gov/session2018/Bills/SB2046_.PDFSB2046
"1134-8 Ownership, etc., of automatic firearms, silencers,
trigger modification devices, etc., prohibited; penalties.
; a trigger modification device, bump stock or bump
fire device, trigger crank, or any part, combination of parts,
component, device, attachment, or accessory that is designed or
functions to accelerate the rate of fire of a semiautomatic firearm
(b) Any person who installs, removes, or alters a firearm
part with the intent to convert the firearm to an automatic
firearm,
or to accelerate the rate of fire of a semiautomatic
firearm, shall be deemed to have manufactured an automatic
firearm in violation of subsection (a)
* * * *
So would a Dremel buffing wheel that could be used to polish certain surfaces of a trigger group be such a "device"? What about a whole new trigger group or lighter weight springs?