Nozzle Heating up Indefinitely when Printing Only

Vertex 3D Printer Vertex - Issues while printing
1

Hello,

I use PLA at 190°C and HIP support at 225°C with two nozzles.

In dual head mode, it heats up the PLA nozzle, makes the first layer and then moves to one side to heat the HIP nozzle. The only problem is that the HIP nozzle gets up to temperature (to the point where the heater LED begins to flicker) and the printer doesn’t begin printing.

This does not occur when the nozzle heats up to load the HIP (Using the ‘Load ABS’ function), perhaps due to the different temperature.

I reduced the temperature in the first place to try and fix the HIP from oxidising and turning black [color=#0000FF](forum topic)[/color], but also because lower temperatures provide a number of other benefits.

Any help would be much appreciated!

2

Can you post your gcode where.

You could also slice your program with ABS and PLA to compare it with the HIPS and PLA version. Only temps should be different between ABS and HIPS.

We do recommend using ABS settings for HIPS.

3

[quote=“VEL327”]Can you post your gcode where.

You could also slice your program with ABS and PLA to compare it with the HIPS and PLA version. Only temps should be different between ABS and HIPS.

We do recommend using ABS settings for HIPS.[/quote]

Thank you for the response. Here is the Gcode for one object I had this issue with:
[color=#0000FF]PLA and HIP Profile[/color]
[color=#0000FF]PLA and ABS Profile[/color]

4

The Gcodes are OK and identical except the temps. What material is in what nozzle and what nozzle is selected when you start the print?

5

Normally the HIP is in the left nozzle (nozzle 1) and PLA is in the right nozzle (Nozzle 0).

6

And can you check what extruder is selected in Repetier when you start the print or are you printing from an SD card?

7

I print from an SD card, but the nozzles are the right way round as the temperatures read correctly on the LCD.