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- EZBoard - EEPROM, TMC Driver Settings, and Acceleration
- EZBoard - FAQ
- EZBoard - Installation Guide & Firmware Info
- EZBoard - Lite V1.X - BTT TFT35-E3 Wiring and Firmware Setup
- EZBoard - Lite V1.x - EZABL Not Triggering Fix
- EZBoard - Lite V1.X – Why do you use the TMC 2208 Instead of TMC 2209 Drivers?
- EZBoard – Flashing Firmware MicroSD Recommendations
- Setting up VSCode to Compile EZBoard Firmware - Local Compile
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- Bowden Fitting Clips for Tough Extruder Fittings
- Creality Extruder Motor Shaft Lengths
- Heatbreak Installation Information
- PTFE Heatbreak Installation Directions
- TH3D Ender 5 Plus ABS Tough Extruder Bracket Assembly
- Tough Extruder Firmware Settings
- Tough Extruder or E3D Titan Assembly Video
- Upgraded Aluminum Extruder Installation Video (V2)
- Using your All Metal Hotend
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- Applying Vision Miner Nano Polymer
- EZFlex/EZMat/EZPei – Adhesion Tips and Tricks
- Fitting Fans to Creality Machines – Larger Metal Standoffs
- How to use our Fan Quick Connectors (UY Style)
- Older EZABL Kits (V1/V2/V3/V3.1)
- PTFE Safety Precautions – ALL PTFE & ToughTube
- Raspberry Pi Direct Wire Power Adapter – How to connect
- TH3D High Amp 12V/24V MOSFET V2 Installation Information and Mounts
- TH3D Solid Bed Mounts Installation Information
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- Creality CR-10 V2 Firmware | V2.5.2 Board
- Creality CR-10, CR-10S, CR-20, Ender 3/5 - Dual Extrusion Board | V2.X (2560) Board
- Creality CR-10/Mini/S4/S5, Ender 2, Ender 3, Ender 5 Firmware | Melzi (V1.1.x) Board
- Creality CR-10/S, Ender 2/3/3 Pro/5/5 Pro/5 Plus, & Sovol SV01 Firmware | EZBoard Lite Board
- Creality CR-10S Mini/S4/S5/Pro, CR-20, CRX, Ender 3/5/5 Plus Firmware | V2.X (2560) Board
- Creality Ender 3 V2 Firmware + LCD Firmware | V4.2.X Board
- Creality Ender 3/3 Pro & Ender 5/5 Pro Firmware | SKR E3 Mini Board
- Creality Ender 3/3 Pro & Ender 5/5 Pro Firmware | V4.2.X Board
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- Audew JC-48A Humidor Trays
- Bowden Fitting Clips for Tough Extruder Fittings
- Ender 3 Dual Z Kit PSU Relocation STL Links
- EZABL Probe Mounts - Where to download them
- EZABL Solid Mount Camera STL Files
- EZOut Filament Sensor Mount for Wanhao Duplicator i3
- TH3D 40MM Fan Grill
- TH3D Ender 5 Plus ABS Tough Extruder Bracket Assembly
- TH3D Uno Bootloader Kit Case
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- 3D Printer Help Guide Creality & Others
- ABL Z Offset, Gantry Leveling, Babystepping, Storing Offset to EEPROM
- Creality V4.2.X Board Driver Codes
- Printer Bed Sizing Chart
- Printer Homing Types | Home Positions Explained | Min/Max/ABL Probes
- Removing Stress Marks from Printed Parts
- SKR E3 Mini, SKR E3 Turbo, Creality V4.2.2, and V4.2.7 LCD EMI Issue
- Testing and Checking your Stepper Motors
- Thermistor Values for Unified 2 Firmware
- Tips for Printing ABS Successfully with your 3D Printer
- What board is in my Ender 3D printer? | Ender 3/5
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- AnyCubic Mega Zero V1 Heated Bed Upgrade DIY Info
- CR-10S V2.0/V2.1 Temperature Repair
- Creality Press-Fit Extruder Gear Removal
- Dual Extrusion Setup Information
- EZABL Duet Board Setup Information
- Linear Advance Information for Marlin Based Firmware
- P.I.D. Bed Calibration Guide
- P.I.D. Hotend Calibration Guide
- Re-wiring 2 Pin Fan Connectors - Video
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- Arduino IDE - Mac OS X Setup Guide
- Pronterface - Using Pronterface to send GCode to your Printer
- Simplify3D - Not Connecting to Printer over USB
- Slicers - Starting Gcode Locations - EZABL
- VSCode - "No such file or directory" Error
- VSCode - Manually Selecting your Upload (COM) Port
- VSCode - PlatformIO Toolbar Missing - How to Fix
- VSCode - Problems & Terminal Tabs
- VSCode - Setup Guide for Unified 2 and Marlin 2 Firmware
- VSCode - Unified 2 Tips for Noobs (Video)
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- 3D Printer Help Guide Creality & Others
- CR-10(S) Setup and Mechanical Checks
- EZFlex/EZMat/EZPei – Adhesion Tips and Tricks
- Fan Stuck 100% or Not Coming On - Layer Fan or other Fan
- Flashing Firmware with an Uno – Useful if your printer USB port is bad
- Printer Grounding – How to Check your PSU and Grounding Your Bed
- Sensors and Gantry Grounding
- Setting your ZOffset (Video)
- Temp Reading High, MAXTEMP Error, or LCD Blank
- Testing and Checking your Stepper Motors
- Testing your SD Card for errors
- Using your All Metal Hotend
- Y Layer Shifting on Your Printer
- Z Axis Troubleshooting
- Zits or Blobs On My Prints
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- Creality BL Touch Probe Mount Offsets (Metal Bracket)
- Creality CR-10 and CR-10S Models – What Printer do you have?
- Creality CRX – EZABL, EZOut, and Firmware Videos
- Creality Ender 3 & Ender 3 Pro - Upgrades, Information, and Tips
- Ender 3 V2 - Swapping to the 12864 Creality LCD for more features
- Ender 5 Plus Upgrade Paths – EZABL, EZBoard, LCD Kit
- Unified Firmware Wanhao Duplicator i3 Plus Information
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- AC Bed Wiring with a SSR for Control
- BL Touch Wiring Harness Colors – Antclabs vs BigTreeTech (BTT)
- BL Touch Wiring Harness Colors – Antclabs vs Creality
- Creality Mega 2560 Board Connections (CR-10S/Dual Board)
- Creality Melzi Board Connections (CR-10/Ender 3/Ender 5)
- Creality V2.0/V2.1/V2.2 Board – Atmel 2560 ICSP Programming Header Pinout
- EZABL PSU 12V/24V Power Wiring
- EZABL SKR 1.4/1.4T Connection
- How to use our Fan Quick Connectors (UY Style)
- MKS Gen L Board Connections
- MKS SGen L V2 Wiring/Pinouts
- TH3D High Amp 12V/24V MOSFET V2 Installation Information and Mounts
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- COVID19 - Shipping Delays
- Route+ Insurance - FAQ
- Route+ Insurance - How to open a claim
- Route+ Insurance - Is it worth it?
- Route+ Insurance - When to file a Route+ claim, deadlines, and policies
- Shipment Received, Package Acceptance Pending - USPS Status
- Shipping to Mail Forwarders
- UK Shipping - New VAT laws
- When will my order ship?
- Wrong Address Entered at Checkout
Intro
Zits or blobs can appear on your prints for a multitude of reasons. The cause of them in all cases is due to the printer pausing for a split second that results in filament oozing from the nozzle. The core reason is due to intricate moves that cause the printer to slow down.
Slicer Related
When you are slicing a model your slicer looks at all the “faces” of the model and generates moves based on them. The issue will present itself more when you are printing objects of organic or complex nature. You can get around this by having your slicer merge these moves into simpler ones that result in less tiny moves from the printer. Technically this will reduce the resolution of the print but you are not going to notice it.
This is relevant for SD or USB printing. If using an SD card try a new one from a name brand before going through all these changes. A bad SD card can cause all kinds of issues with your printer.
Cura





Simplify3D
We have not had this issue with Simplify3D and it does not have a setting to change the resolution of the sliced model. There is an option to discard extrusions below a certain length that can improve print times.

PrusaSlicer



Video Information
Here is a video from CNC kitchen that goes over this issue with Cura and PrusaSlicer in detail.
Octoprint Related
If you are using OctoPrint the issue can be a multitude of issues. But the core issue is the buffer running out for some reason and the printer pausing as it waits for the next command. We did a detailed video on it here if you want to watch it. Doing the above resolution changes with your slicer will also help with the serial data transmission pauses with OctoPrint as well since the printer is receiving larger moves instead of smaller moves.
Things to check and do (or not do) if you are using OctoPrint to help fix zits or blobs on your prints:
- TH3D Firmware – Make sure you are using firmware that is the latest for your board/printer if its one that we support with our TH3D firmware releases
- Marlin Firmware – Increase the buffer sizes in your printer firmware if you are using a custom machine or standard Marlin
- Power Supply – Make sure you are using a 3 Amp power supply to power your Pi. This means a real power supply NOT a phone charger or other USB charger. A charger is not a power supply and will cause issues with a Raspberry Pi
- USB Cable – Make sure the USB cable you are using to connect between the printer and the Pi board is a high-quality cable, shorter is better.
- SD Card Issues – Make sure you are using a working MicroSD card that is a Class 10 or better card from a reputable brand.
- Reinstallation – Flash a fresh OctoPrint installation and do NOT install any plugins if you have ruled out all hardware issues with your OctoPrint setup (PSU, SD Card, Cooling)
- Plugins – Plugins are awesome for OctoPrint but they can cause issues if they are spiking the CPU. Reinstall OctoPrint from a fresh image and then reinstall your plugins one by one until you find the one (or combination of plugins) that is causing the CPU spikes.
- CPU Power – You must use a Raspberry Pi 3B or higher board. Anything lower than this (Pi Zero Pi 1, Pi 2, etc) will not work well and cause issues as they are underpowered.
- Patience – Stop refreshing and pulling up the OctoPrint UI unless you need to. This can spike the CPU and cause slowdowns