$550 flat. SOLIDWORKS model included. Michigan-based, remote-capable. For startups, inventors, and product developers.">
RigidEngineering™ — Rapid Prototype Package

Concept to 3D-Printable STL
in 5 Business Days.

$550 flat · one part · 5 business days
SOLIDWORKS model + STL + discovery call included

Send us a sketch, photo, or description. We build the SOLIDWORKS model and deliver a print-ready STL file. Fixed price. No hourly billing. No engineering retainer required.

Start Your Prototype — $550 → Email to Discuss First →
How It Works

Four steps. Five days. One ready-to-print file.

Submit Your Concept
Send us a sketch, photo, napkin drawing, or written description. Include any critical dimensions you know. We schedule a 15-minute intake call to confirm scope.
We Build the Model
Our licensed SOLIDWORKS engineer creates a parametric solid model from your concept. We design for printability — wall thickness, overhangs, and support minimization built in.
You Review & Approve
You receive a rendered preview and a 15-minute review call to approve or request one round of minor revisions. We do not proceed to delivery without your sign-off.
Files Delivered
SOLIDWORKS native (.SLDPRT), STEP, and STL delivered digitally. Ready to upload to your printer or send to a print service. RigidVault provenance record included.
What You Get

Everything you need to test your idea physically.

📄 Included in $550
  • 15-minute intake scoping call
  • Parametric SOLIDWORKS solid model
  • Print-ready STL (FDM and SLA optimized)
  • STEP file for downstream engineering
  • 15-minute review call
  • One round of minor revisions
  • RigidVault IP provenance record
  • 5 business day turnaround
📈 Optional Add-Ons
  • FEA stress analysis — from $400
  • Dimensioned engineering drawing — $150
  • Physical 3D print — contact for quote
  • DFM review for injection molding — from $300
  • Additional revision rounds — $75/round
  • Assembly modeling (2+ parts) — from $499
This package is for single-part concept modeling. Complex assemblies, moving mechanisms, and production-intent designs are quoted as standard RigidEngineering projects. Not sure which applies? Email us — we will tell you honestly.
Who This Is For

Built for people with an idea, not an engineering department.

💡 Inventors & Makers
You have an idea sketched on paper. You need a real file to print and test before committing to tooling or a full engineering engagement. This is that step.
🚀 Startups
You need a physical prototype for a pitch, a demo, or user testing. Fixed cost, fast turnaround, no engineering retainer. You stay focused on the business.
🏭 Small Manufacturers
You have a part you need to replicate or modify and no CAD file exists. Send us the physical part or a photo and we build the model from scratch.
🏫 Students & Educators
Capstone projects, competition builds, classroom demos. Real engineering deliverable at a price that fits an education budget. NDA available for competitive projects.
Common Questions

Rapid prototype — answered.

That is exactly what this package is designed for. The 15-minute intake call is where we translate your idea into a modelable scope. You do not need to know CAD, tolerances, or file formats — just know what the part needs to do.
If scope changes on the intake call, we tell you before any work begins and quote accordingly. You never see a surprise invoice. The $550 flat rate is honored for any single part that fits the scope described on the intake call.
Yes — contact us after receiving your STL for print pricing by material and size. We can also recommend print services if you want to use your own provider.
You do. All work product is transferred to you on delivery. The RigidVault provenance record timestamps your design on the delivery date, giving you evidence of creation for patent applications or IP disputes. We sign an NDA on request for any competitive or sensitive concept.

Ready to make your idea physical?

$550 flat. 5 business days. No engineering retainer. No hourly billing surprises.

Start My Prototype → See All Engineering Services →