In line filament dryer.
Posted: Fri Dec 07, 2018 10:04 pm
I have seen the "adapted" Walmart grade dehydrators, meh.
What I would LIKE to create is a small enclosure that I can dry filament in as it passes through in the normal course of printing.
Here are the missing variables, any help in deriving them would be much appreciated;
1) Needed residence time for typically "damp" 1.75 mm filament in a ~100 C heater box
2) Range of feed rates of filament (at its "from the spool" diameter of 1.75) on Artemis.
{I can figure that from print speed and nozzle size, but given travel moves and retraction would not need 100% of it}
3 through n) What I haven't yet thought through.
Right now I am thinking of a fairly large heated "screw" form that the filament would be wrapped around and pulled ONTO as it is pulled OFF OF by the extruder.
Alternatively the heat could be applied external to the screw.
Thoughts ? Criticism ?
i.e. Is this CRAZY because the drying time for a few meters of filament is HOURS ?
or could enough moisture be "driven out" in some reasonably small number of minutes ?
Not ALL of it, I'm not striving for that, but some meaningful reduction that would improve print quality ?
What I would LIKE to create is a small enclosure that I can dry filament in as it passes through in the normal course of printing.
Here are the missing variables, any help in deriving them would be much appreciated;
1) Needed residence time for typically "damp" 1.75 mm filament in a ~100 C heater box
2) Range of feed rates of filament (at its "from the spool" diameter of 1.75) on Artemis.
{I can figure that from print speed and nozzle size, but given travel moves and retraction would not need 100% of it}
3 through n) What I haven't yet thought through.
Right now I am thinking of a fairly large heated "screw" form that the filament would be wrapped around and pulled ONTO as it is pulled OFF OF by the extruder.
Alternatively the heat could be applied external to the screw.
Thoughts ? Criticism ?
i.e. Is this CRAZY because the drying time for a few meters of filament is HOURS ?
or could enough moisture be "driven out" in some reasonably small number of minutes ?
Not ALL of it, I'm not striving for that, but some meaningful reduction that would improve print quality ?