Troubleshooting common challenges with 3d printers

Post on 28-Nov-2014

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How to troubleshoot common challenges with desktop 3D printers, as presented by Lars Brubaker, CEO of MatterHackers at the 2014 3D Printer World Expo.

Transcript of Troubleshooting common challenges with 3d printers

Getting A Good Print What do you control?

• A Valid Model

• A Working Machine

• Calibration

Calibration Getting the First Layer Right

• Absolutely the most important part of your print

• 99% of all problems happen on the first layer

• If the first layer is good the rest probably will be

What to do? Level The Bed

• Nothing is more important

• Nothing will help if this is not right

• More tips - after we level…

How to Measure Level Use a Drop Indicator

Advantages

• Very accurate

Disadvantages

• May be un-mountable

• Cumbersome to use

How to Measure Level The paper method

Advantages

• Works on all printers

Disadvantages

• What is correct paper

• What is correct preasure

How to Measure Level Just eyeball it!

Advantages

• We all have the equipment

• Easy to use

Disadvantages

• Some printers not visible

• Takes some finesse

X-Axis Leveling If 2 lead screws (x-axis)

• Move carriage to left

• Move extruder to bed

• Move carriage to right

• Adjust screws to fix height

• Repeat until level on x

Bed Plate Leveling With adjustable sprung bed

• Loosen back right screw

• Move extruder to corners

• Adjust other 3 screws

• Repeat until level

• Tighten back right o Just touching plate only

Bed Plate Leveling If bed has under adjustment screws

• Same procedure as last

• Some printers can be

adjusted while printing.

Software Leveling MatterControl

• Included Software Print Leveling

• Wizard samples bed at 3 points

• Corrected while printing

LEVELED! Your printer should now be level! What’s next?

• Z-Height

• Filament Settings

• First Layer Speed

Z-Height • Depends on the printer

• Most are z-min

• Common procedure 1. Tighten z-pin

2. Home z axis

3. Adjust z-pin as needed

4. Back to step 2 until just on bed

Filament Settings Common Settings That Will Help You

• First Layer Temp o Just Hot Enough to Stick Well

o Raise the temperature 5°c until sticking well

o Approximately 10-15° hotter than the rest of the print

• Extrusion width of 200% is good

• Make Sure First Layer Height is Tall Enough o Good setting is ½ Extruder Diameter

o .4mm nozzle = .2mm first layer height

First Layer Speed It is Very Simple - Go Slow

• 20 mm/s is a good start

• Make sure moves are also slow

• We set a fixed number rather than a percent

Thank You! More info available at MatterHackers.com

You can also contact me directly

larsbrubaker@matterhackers.com