Explore Fray

For robotics and hardware teams

The small mechanical part blocking your next prototype—done in 72 hours.

Send a dimensioned sketch for a simple bracket, mount, adapter plate, or electronics deck. Get an editable STEP file, source, drawing, design-rule evidence, human review, and one revision.

Review the pilot

$149 fixed pilot · in-scope briefs only

What you receive

  • Editable STEP and parametric source
  • Critical-dimension drawing and rendered preview
  • Automated Burr design-rule receipt
  • Documented assumptions and unresolved risks
  • Human review and one bounded revision

72 business hours

$149 pilot price

Evidence included

A good pilot brief

  • Dimensioned sketch or reference geometry
  • Mating interfaces and fastener standard
  • FDM material and process assumptions
  • How the part will be used and your deadline

Not accepted

Safety-critical or regulated parts, assemblies and mechanisms, pressure or lifting parts, fatigue or impact claims, missing-interface reverse engineering, and requests for certification or guaranteed strength.

Five pilot places

Bring the sketch that is holding up your build.

If your brief is in scope but we cannot deliver a reviewable package within 72 business hours, the $149 pilot payment is refunded.

Intake remains disabled until the founder approves the launch and a persistent brief form is connected.

This pilot provides a prototype design package and automated engineering screens based on the dimensions and constraints you provide. Screens are decision support—not certification, professional engineering approval, or a substitute for physical testing. You remain responsible for independent review, fabrication choices, fit checks, testing, and safe use.