MK1-450 - Revision history

Davo at 14:04, 8 December 2025

2025-12-08T14:04:50Z

2020-07-29T18:01:17Z

2020-07-29T18:00:09Z

2020-06-22T19:56:40Z

‎Firmware

2020-06-19T17:32:40Z

‎Maintenance

2018-02-25T16:06:07Z

2017-04-01T15:04:50Z

2016-11-28T19:35:24Z

2016-11-28T19:28:49Z

2016-11-28T19:28:09Z

@@ Line 5: / Line 5: @@
 |}
-<span style="color: red;">'''''NOTE: As of July 2020, the MK1-450 has been discontinued in favor of the HT1-450.'''''</span>
+<span style="color: red;">'''The MK1-450 has been discontinued, and replaced with the FH2-450.'''</span>
-The MK1-450 is our high temperature print head, and works with 1.75mm filaments which print at temperatures between 250°C and 450°C.
+The MK1-450 was our high temperature print head, and works with 1.75mm filaments which print at temperatures between 250°C and 450°C.
 [[File:MK1-450.png|200px|left|MK1-450]]

@@ Line 5: / Line 5: @@
 |}
-NOTE: As of July 2020, the MK1-450 has been discontinued in favor of the HT1-450.
+<span style="color: red;">'''''NOTE: As of July 2020, the MK1-450 has been discontinued in favor of the HT1-450.'''''</span>
 The MK1-450 is our high temperature print head, and works with 1.75mm filaments which print at temperatures between 250°C and 450°C.

@@ Line 4: / Line 4: @@
 | __TOC__
 |}
 The MK1-450 is our high temperature print head, and works with 1.75mm filaments which print at temperatures between 250°C and 450°C.

@@ Line 72: / Line 72: @@
 == Firmware ==
-MK1-450 heads all have platinum RTD wires, and therefore use the firmware labeled "FILAMENTS_33A.hex" or "hothead.mk400.33A.hex" (these are actually the same file with different names).
+With version 4 and later, all heads take the same firmware!
 == Maintenance ==

← Older revision		Revision as of 17:32, 19 June 2020
Line 77:		Line 77:

	Very little maintenance is required on this head. Use a wire brush or tweezers to remove any excess plastic on the nozzle, and use a shop vac or air hose to suck or blow away any buildup of eroded filament in the feed chamber and/or on the hobs (teeth) of the motor shaft.		Very little maintenance is required on this head. Use a wire brush or tweezers to remove any excess plastic on the nozzle, and use a shop vac or air hose to suck or blow away any buildup of eroded filament in the feed chamber and/or on the hobs (teeth) of the motor shaft.
		+
		+	=== Changing Nozzles ===
		+
		+	How to disassemble the nozzle from the MK1 head:
		+
		+	# Carefully:
		+	# Heat to the printing temperature of the material loaded.
		+	# Move the manual lever to the left, retracting material until it is free of the hobbed shaft, then remove by hand.
		+	# Turn off heat to the head and remove it from the yoke.
		+	# With a 1/4" driver or wrench, remove the nozzle.
		+	#. Inspect the nozzle cavity for any stray material; if found, remove with tweezers, solvent, air pressure or other means.
		+
		+	How to reassemble the nozzle on an MK1 head:
		+
		+	# Carefully:
		+	# Ensure your MK1 has no filament loaded.
		+	# With a 1/4" driver or wrench, attach the nozzle.
		+	# Use normal procedure for heating and loading filament.
		+
		+	Please let me know if any of that is not clear.

@@ Line 59: / Line 59: @@
 # Straighten (if needed) the last few cm of the new filament, which should be routed through the guide tubing. Insert it down through the pneumatic fitting on the top and centered between the two bearings, between the bearings and the drive shaft of the motor.
 # Press the manual feed lever to the right, advancing the filament until the lead end advances into the white PTFE tube.
-# In repetrel, click the motor on at 500 (pulses per minute) until the new filament advances to the melting zone and forces the old filament out. Advance about 30cm of filament, checking for smooth sides and uniform color.
+# In repetrel, click the motor on at 500 (pulses per second) until the new filament advances to the melting zone and forces the old filament out. Advance about 30cm of filament, checking for smooth sides and uniform color.
 # Remove excess filament with tweezers. Seat the guide tubing. You are ready to go.

@@ Line 6: / Line 6: @@
 The MK1-450 is our high temperature print head, and works with 1.75mm filaments which print at temperatures between 250°C and 450°C.
 [[File:MK1-450.png|200px|left|MK1-450]]
@@ Line 18: / Line 16: @@
 *Ultem
 </div>
 == Description ==

@@ Line 9: / Line 9: @@
 * [[File:Yt.png]] [https://www.youtube.com/watch?v=UvZMecXsHEM Video: Overview of the MK1-450 Print Head]
-[[File:MK1-450.png|200px|MK1-450]]
+[[File:MK1-450.png|200px|left|MK1-450]]
 This includes the following materials:
-<div style="column-count:5;-moz-column-count:5;-webkit-column-count:5">
+<div style="column-count:3;-moz-column-count:3;-webkit-column-count:3">
 *PC (PolyCarbnoate)
 *PEEK (PolyEther Ether Ketone)

← Older revision		Revision as of 19:28, 28 November 2016
Line 6:		Line 6:

	The MK1-450 is our high temperature print head, and works with 1.75mm filaments which print at temperatures between 250°C and 450°C.		The MK1-450 is our high temperature print head, and works with 1.75mm filaments which print at temperatures between 250°C and 450°C.
		+
		+	* [[File:Yt.png]] [https://www.youtube.com/watch?v=UvZMecXsHEM Overview of the MK1-450 Print Head]

	[[File:MK1-450.png\|200px\|MK1-450]]		[[File:MK1-450.png\|200px\|MK1-450]]