Captive furnace door handle and seal - Coleman Furnace

prusaprinters

<p>Summary - Replacement for the captive door handle and seal on a Coleman high-efficiency furnace.&nbsp;</p><p>Story - while opening the door on the top of my furnace, the original captive doorknob popped out and rolled into a hole in the floor. &nbsp;I used the second knob as a model and designed this replacement captive doorknob for the furnace door, getting a close match. &nbsp;The replacement fits perfectly, and functions identically to the original.</p><p>How to print:</p><p>There are two parts - Knob - PETG - It's a furnace door. &nbsp; Seal - TPU - It's a seal.</p><p>The included .3mf for the knob has support enforcers defined and generates a decent amount of supports. &nbsp;Take them off carefully with a pick and a file and cutters. &nbsp;You will be rewarded with a fully functional knob that fits within the accompanying seal.</p><p>Print the seal in TPU. &nbsp;</p><p>Assembly - slip the seal over the arms on the inside of the doorknob - just like the original. &nbsp;Look at the other one you already have to see how they go together. &nbsp;Put the flat side of the seal against the knob. &nbsp;Then, angle the knob assembly into the furnace door from the outside, snap it into place.&nbsp;</p><p>&nbsp;</p>