85mm Premium Seedling pots-Fit standard 1020 tray

🌱🌱🌱Premium Seedling Pots – Designed for Serious Gardeners🌱🌱🌱

Upgrade your seed-starting game with my high-performance 3D-printed seedling pots, specifically designed for real gardening enthusiasts. These pots fit perfectly into a standard 1020 tray, allowing you to place 18 pots per tray for an optimized setup.

This size is perfect for tomatoes, peppers, eggplants, etc…

You can also check my 62mm - 32 pots per 1020 tray model

Key Features:

✔ Ultra-thin walls – More economical while maintaining durability.
✔ Large bottom hole – Easily push out seedlings with your finger for stress-free transplanting.
✔ Reinforced side structure – Adds rigidity and helps guide root growth, preventing root circling.
✔ Enhanced drainage – Multiple bottom holes ensure proper water flow.
✔ Side holes for bottom watering – Improves moisture distribution for healthier plants.
✔ Air pruning slots – Promotes stronger root systems by naturally pruning roots as they reach the air.

Designed for professional gardeners and passionate growers, these pots provide optimal root health, efficient drainage, and easy transplanting—all while being cost-effective and reusable.

Get ready to grow stronger, healthier plants with one of the best seedling pots ! 🌱

Descriptions : 

Two Versions of pots to fit your needs

🔹 Original Version (0.8mm walls) – Cost-Effective & Efficient

• Designed for maximum efficiency while using less filament.
• Thin yet strong walls, proven to be sufficient through extensive testing.
• Achieves excellent layer adhesion by increasing filament temperature and reducing print speed.
• Ideal for those who want a lightweight and economical solution.

🔹 Reinforced Version (1.2mm walls) – Extra Strength & Durability

• A thicker-walled alternative for those needing extra rigidity.
• Perfect if you struggle with layer adhesion issues or prefer a sturdier pot.
• Slightly heavier and less cost-effective but more resistant to handling and stress.

Inserts and tray : 

9-Pot Insert – Designed for Standard 1020 Trays

• Holds 9 pots per insert, with two inserts fitting perfectly into a standard 1020 tray (18 pots total).
• Slightly non-square shape ensures a good fit within the tray for stability.

Standalone 4-Pot Tray & Insert – For Those Without 1020 Trays

• A self-contained solution for growers who don’t have access to standard 1020 trays.
• Includes a tray that retains water, thanks to a specialized print profile.
• Provides the same efficient drainage and air pruning benefits as the 1020-compatible version.

Note: While I have successfully printed my tray multiple times without leaks and with perfect water retention, you should still test it on a surface that cannot be damaged in case of a leak. Let it sit with water for at least 2-3 days to ensure it holds properly before use.

Please be sure to use my profile, if i use everything standard in bambu studio, my tray was not watertight.

Note for PLA : I highly recommend to print in PETG HF and not in PLA since you will probably put your seedling under grow light or direct sun.  If you still want to print the in PLA, i still achieve a wathertight tray in my PLA test, Make sure to increase your filament temperature and slow down your print speed to get the best layer adhesion possible and leave other parameters in the print profile intact.

Profiles and printing : 

Pots : 

i put 3 plates in the profile with different quantity on it, just to be easier for you to start your print  : 

• Plate 1 : 1x pot, for testing or individual printing
• Plate 2 : 3x pot, for a fast print a line in your 1020 tray (for a beautiful multicolor 1020 tray)
• Plate 3 : 4x pot, the quanity for my sandalone tray

There are 2 versions, the original with 0.8mm wall and the reinforced with 1.2mm wall.  

I get really good result with 0.8mm with my profile, so please use it if you use Bambulab PETG HF.

• Profiles have been tested with Bambulab PETG HF.  Results with generic PETG vary, so if you want to use a generic PETG, please consider those points to get good layer adhesion :
  • Increase the flow ratio by 0.01 or 0.02
  • Increase temp to the max you can for your filament
  • Slow down the print (i use 50mm/s for the PETG HF) you can slow it down to 30mm/s for generic PETG
  • If you can't get good layer adhesion, you can slow the cooling too
  • Otherwise, print the reinforced version

----------------------------

9-Pot Insert (for standard 1020 trays): 

You wil need to use the full bed for that.  If you never print on the full bed size, please check this link in the wiki.  https://wiki.bambulab.com/en/knowledge-sharing/print-volume-limitations

You will need to use external spool and block the filament cutter and change setting for the printer to remove the front left white corner on the build plate in bambu studio.

If you use a P1P or P1S, you can also print my little Warning Sign, so you will not forget to remove your cutter blocker after your print and will not lost your cutter blocker. :P

----------------------------

Standalone 4-Pot Tray & Insert : 

The tray and the insert are in 2 differents profile.

Unfortunatly. I can't put home-made filament setting in a profile, and i can only change settings of 1 filament type at a time (i can't put 2 different PETG HF setting) .  

The tray settings have higher temperature, have a higher flow rate and a higher bed temp to reduce the warping. 

The insert use the standard PETG HF Settings.

So they are in 2 differents profile.  Sorry for that.

For A1 and A1 Mini users : Please be sure to have a warm room to help reduce warping. 

For A1 Mini users  :  you “can” print the tray, but i highly recommend to add a tape to hold the build plate in place, the tray may warp and take the build plate with it, note that the tray take almost all the bed size of A1 Mini. 

You can also print my A1 Mini Build Plate Clip if you want, but please note that you will have to print them in ABS or ASA to be able to print the tray in PETG.

• Profile have been tested with Bambulab PETG HF.  Results with generic PETG vary, so if you want to use a generic PETG, please consider those points to get a watertight tray :
  • Increase the flow ratio by 0.01 or 0.02
  • Increase temp to the max you can for your filament
  • Slow down the print (i use 50mm/s for the PETG HF) you can slow it down to 30mm/s for generic PETG
  • If you can't get good layer adhesion, you can slow the cooling too
  • Otherwise, print the reinforced version

----------------------------

You can leave comments and upload photos—it's always appreciated to see pictures from the community!

If you have any problem please comment and put a picture so i can see what is happening and will be easier to help you.  You can also message me in private if you prefer, i'll try my best to help you.

Please don't put a bad rating if you don't get the tray to be watertight if you don't use my profile with PETG HF, I did several tests before being able to achieve no leaks, so please use my profile or don't leave bad rating for this.

Happy gardening season! 🌱😊

Other gardening models you might also be interested in : 

Soil Sifter for Seedlings

62mm - 32 pots per 1020 tray model