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 Kossel Model A User Manual Page 25 

BED LEVELING 

Bed leveling ensures that the printer bed is perpendicular to the nozzle. An unleveled bed will result in poor adhesion to the bed and 
poor print quality. The bed is leveled by adjusting the three bed leveling screws which allows for adjustment of the bed during 
printing of the first layer, if required.  

The goal during the bed leveling process is to have the nozzle 0.1 mm above the bed when it prints the first layer of your part. To 
simplify the bed leveling process, we have created a G-code program that will aid you in completing the leveling process in less than 
5 minutes. This bed leveling program can be downloaded at 

www.tki3d.com/program/bedlevel

. This program moves the nozzle 

adjacent to each tower and brings it to the zero position just above the bed. The nozzle will hold this positon for 20 seconds to allow 
the user to adjust the level of the bed at each tower.  The LCD screen will display a countdown timer to prompt you when the nozzle 
is going to move to the next tower location.  

1.

 

Download the bed leveling G-code onto an SD card 

www.tki3d.com/program/bedlevel

2.

 

Ensure the nozzle is at room temperature and disconnect the power to the hotend fan by disconnecting the connector 
before beginning the bed leveling process. 

 

3.

 

Use the control knob to navigate to the bed leveling program on the SD card (Bedlevel.gcode) and select run.  

4.

 

Adjust the bed leveling screw next to the first tower when the nozzle is adjacent to the first tower to the point that the 
nozzle is almost touching the printer bed. A good way to check for clearance between the bed and the nozzle is by inserting 
a piece of paper between the bed and the nozzle. If there is a slight drag on the paper then the nozzle is in the correct 
position.  

5.

 

Repeat step 4 as the program moves the nozzle to the remaining two towers. 

Note: 

For the first print after the bed leveling process, it is important to watch the first layer to ensure it 

adheres to the bed correctly. You may have to adjust the bed leveling screws during this first layer to 
optimize the bed position.

 

 

Содержание Kossel Model A

Страница 1: ......

Страница 2: ...inter Profile in Cura 8 Printing Settings 13 Printing Setting Definitions 13 Generating G code using Cura 19 Step by Step Process 19 Printing from an SD Card 21 Step by step Process 21 Printer Operati...

Страница 3: ...Manual was assembled to provide guidance in understanding common procedures while using our 3D printer It covers everything from the basic setup you ll need to get started to the maintenance required...

Страница 4: ...tures of the TKI Kossel Model A printer You can reference this graphic for clarification of printer parts mentioned in this manual Extruder Printer Bed Gantry Hotend Nozzle Bowden Tube Filament Spool...

Страница 5: ...so the drive gear can grip the filament Bowden Tube quick disconnect Green attaches the Bowden Tube to the Extruder Bowden Tube The Bowden Tube is the small tube that runs from the extruder to the hot...

Страница 6: ...is the Z These designations are used when leveling the bed and during troubleshooting procedures Carriage There is a carriage located on each linear rail which is attached to each tower The cumulativ...

Страница 7: ...ergency stop button bottom Press in the control knob to select a function or rotate it to scroll through the menu options If the stop button is pressed the machine must be power cycled for functionali...

Страница 8: ...at will be used on this screen are Auto Home Zeros the machine and returns the gantry to the home position Preheat PLA Sets the hotend temperature to 200 C Bed Leveling Screws The bed leveling screws...

Страница 9: ...om resources Note While TKI recommends using Cura for slicing and G code generation other slicing software can be used The printer parameters detailed below are a recommended for optimum performance o...

Страница 10: ...Kossel Model A User Manual Page 9 4 Click Next on the Configuration Wizard 5 Under Select your machine choose Other Ex RepRap MakerBot Witbox Then click Next...

Страница 11: ...Kossel Model A User Manual Page 10 6 Under Other machine information select Custom and click Next...

Страница 12: ...Kossel Model A User Manual Page 11 7 Input the following values into the RepRap custom settings...

Страница 13: ...l Model A User Manual Page 12 8 Go to Machine Machine Setting 9 Verify the following values in the table under Machine settings and click Ok Your TKI printer profile has now successfully been added to...

Страница 14: ...uide to the different settings that may need to be changed and which settings should remain constant depending on your desired results PRINTING SETTING DEFINITIONS Basic Settings The parameters that a...

Страница 15: ...ess of the solid bottom and top layers of a part This value must be a multiple of the layer height For example a part with a layer height of 0 2 mm will have 3 solid bottom and top layers when the inp...

Страница 16: ...egree requirement including overhangs that are over another section of the part Clicking on the button will bring up the Expert config window where additional features can be edited Platform adhesion...

Страница 17: ...e This value can be adjusted to optimize the quality of the print A typical value is between 90 100 for your TKI printer If excessive plastic is being extruded reduce this value by 5 Advanced Settings...

Страница 18: ...discussed Travel speed mm s The speed at which the hotend moves when it s not extruding filament Bottom layer speed mm s The speed at which the hotend moves when printing the first layer This value i...

Страница 19: ...Cura interprets all dimensions in millimeters If the model was made using inches it will appear very small in the Cura window Simply select the part and uniformly scale it by 25 4 to restore the part...

Страница 20: ...that the control the printer motors and heater Individual objects may require changing some of the parameters discussed in the previous sections to obtain the desired quality and speed STEP BY STEP PR...

Страница 21: ...ction for help manipulating the part 4 Verify and adjust any of the Basic and Advanced printing settings See the Printer Settings Definitions section for more detailed information on these settings No...

Страница 22: ...e Main Menu 4 Scroll down to Print from SD and press the control knob again to select this function 5 Use the control knob to scroll to the desired print file Newly added files will usually appear at...

Страница 23: ...o the operating temperature 210 C for PLA 2 Push up on the extruder lever and slightly push in on the filament until it comes out of the tip of the nozzle The figure below shows the extruder lever and...

Страница 24: ...ll but if the belts are too loose they could skip a tooth on the pulley Follow the steps listed below for easy belt tensioning Note Only tighten one belt at a time to prevent the top support from drop...

Страница 25: ...lue Painters Tape and a razor blade optional 1 Remove any old tape that needs to be replaced 2 Apply the new Scotch Blue painters tape to the bed to replace the tape that was removed 3 Gently press do...

Страница 26: ...isplay a countdown timer to prompt you when the nozzle is going to move to the next tower location 1 Download the bed leveling G code onto an SD card www tki3d com program bedlevel 2 Ensure the nozzle...

Страница 27: ...HOOTING The table below shows some of the most common problems experienced with 3D printer use and solutions to resolve them For more troubleshooting help visit our FAQ page www tki3d com resources If...

Страница 28: ......

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