This is the official TD(Transmission Distance) step test developed by the creator of HueForge(listed here with his permission). This test can be used to test the TD of your filament TDs. This is the LEDs I used for the light box https://www.amazon.com/BTF-LIGHTING-Dimmable-Flexible-Backlight-Decoration/dp/B08X6LHLR9. These LEDs can be substituted with any 5v LEDs with a similar LED per inch density. Video tutorial - https://www.youtube.com/live/iPjsLEmgbog?feature=share

Print Settings

• TD_Step_Test - 100% infill @ 0.2 layer, filament type and color you are testing.
• TD_Step_Test_Plus_4 - 100% infill @ 0.2 layer, filament type and color you are testing. - TD_Step_Test_Slide_In_Frame - 2+ walls 15% infill, 3-5 top and bottom layers, black/dark filament
• TD_Step_Test_Box_Top - 2+ walls 15% infill, 3-5 top layers, black/dark filament(choose from the three options.) For multicolor text, choose your color for the text.

Testing Filament Place the step test into the viewing lid and with the led lights on check for the step where the light starts to dim to the point that any steps beyond are all the same brightness. The last step before the final dimming, is your calculated TD value. If all the steps are bright, print and insert a TD_Step_Test_Plus_4 of the same filament under the step test block and check again. This block adds 4 to the number on the top of the box. If adding one TD_Step_Test_Plus_4 block is still not enough, keep adding additional TD_Step_Test_Plus_4 blocks till the steps begin to dim.

EDIT 8/15/2023 Uploaded a V2 of the following

• TD_Step_Test_Box_Top models(adds a notch for proper indexing the TD_Step_Test and grooves for easy swatch removal)
• TD_Step_Test(with grooves to align with new notch in the TD_Step_Test_Box_Top)
• TD_Step_Test_Plus_4(adds the same grooves as the TD_Step_Test) All previous models are still valid ways of testing your filament. These updated models just add some quality of life improvements and allows for additional quality of life improvements for storage solutions such as https://than.gs/m/918176.

EDIT 8/16/2023 Uploaded a V2 of the following

• TD_Step_Test_Slide_In_Frame to removed the overhang, add a detent for snapping the TD_Step_Test_Box_Top in place.
• TD_Step_Test_Box_Top(each option) added detent for snapping into TD_Step_Test_Slide_In_Frame. Added HueForge Text. Extended bottom length to end of box.

EDIT 8/17/2023 Added 1mm_diffuser. Print in white and drop into the bottom of the box.

EDIT 9/9/2023 Corrected the TD_Step_Test object. There was an error that made the 2.0 and 2.2 the same height and every other step above 2.2 was off by 0.2.