PHONE CASE: PROMPTS AND FIRST-PRINT NOTES
https://mattybuildsit.com/builds/phone-case/

the prompt i used

the text visible in the recording, including my material guess and the dictated printer name. i corrected the material to PETG before printing. check the exact model and filament on your own machine.

I have an iPhone Air and I have one of those bumper cases I bought from Apple. Recently the case cracked in half and I would like to 3D print a new one. I have the Bamboo Lab X2D printer. Doesn't matter what color. I think I have some TPU or something but don't worry too much about the material. You can look up the dimensions of the iPhone online, obviously.

We'll go ahead and use Fusion as our 3D modeling, or you can use Blender. I have Blender CLI installed. I also have a Fusion subscription. I can open up Fusion. You can use the MCP server. You let me know what you think is best.

Let's get this done quickly, okay? I would like to get this sent to the printer ASAP. Get this printed because I have this beautiful phone that I don't want to get hurt.

a prompt for your own build

an adapted template, not another quote from the recording. replace the brackets with your actual setup.

Help me design a printable replacement bumper for my [exact phone model]. My current bumper [describe the break and the parts I want to keep about its shape].

My printer is [exact printer model]. The loaded filament is [manufacturer and material from the spool]. My nozzle and slicer profile are [known settings, or say unknown]. Do not assume these details if I have not supplied them.

You can work in this project folder and use [tools actually installed and available to the agent]. If you use Blender, keep an editable model and the script that builds it, plus a mesh export I can inspect in my slicer.

Find reference dimensions for this exact phone and give me the source links. Tell me which details still need checking against the physical phone: buttons, ports, camera clearance and the shape of the bumper. Separate reference dimensions from your proposed fit allowance.

Explain how the design should account for my actual filament. Show me the proposed shape and assumptions before I print. Do not claim the result provides tested drop protection.

Give me the files, a short explanation of what changed, and the steps to inspect and slice the model. I will check the slicer and send the print myself.

make the next version better

a follow-up template for the fit you actually observe. keep the first version so you can compare.

The first bumper printed and the phone goes in, but [describe the fit issue and where it occurs]. The material was [actual material]. Here are photos and any measurements I took.

Keep the first version unchanged. Propose a second version, explain which geometry you want to adjust, and ask for any missing measurement instead of guessing. Save the editable files and export separately so I can compare them.

These are prompts, not a CAD/model or slicer-profile download. The first print fit but needed improvement. No drop-protection testing is established.