Hi all,
Wrote an extensive entry last night and when I went to check for answers today, could not find it.
Had a fun pm exchange with Kirk about last nights post. He is of the opinion that went 'poof'.
The idea was fairly simple.
In a nut shell was watching the roll of plastic trying to guess if it would run out before my print job would finish.
Then it dawned on me there is no protect device on the Simple Metal for this.
Was looking over other posts, and extracting cooked plastic out of a hot end is no joy at all.
Im the type who sets a print job and goes to bed, expecting it to be ready in the morning.
Life is too short for that kind of failure.
So why let it happen.
Was thinking of using a micro switch, the kind with a little roller on the end of a tab.
That roller will be in contact with the filament as it is routed between two small blocks to hold it straight.
So that when the filament is in place the switch is pressed.
When the roll ends and the tension comes off the switch, it changes state.
Forcing a shut down.
My Simple Metal came with the ATX PSU.
Seemed a good place to start.
The OEM placed some jumpers on the control connector.
Bet if I open one of those paths, the PSU shuts down, and the printer goes dark.
That will prevent cooking plastic in the hot end.
Made some sample parts for a bracket and switch holder, and a rookie error to go with it.
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Operational lesson learned.
Don't make complex posts to this list and design complex parts when exhausted.
Comments welcome.
Jack Crow