Skip to content
BackNov 7
John H.

John H.

Expert Plastic Injection Mold Design Engineer

I've been designing high quality, complex, plastic injection molds for over twenty years. I use Solidworks 3D modeling software. My typical designs include 3D CAD models, bill of materials, and 2D assembly drawings. I also offer fully detailed drawings of all custom components, if needed. My expertise includes unwinding molds, extremely complex parting lines, slides, lifters, hot runners, two-stage ejection, over-molding, two-shot molding, and molds for high temperature plastics such as PEEK and Ultem. Services include plastic injection mold DFM, product design, STL to clean Solidworks CAD model conversion, 3D digital scanning, and 3D printing.

🇺🇸Globe, United States$100/hr90% JSS5.00 (3)Since Feb 2026

Earnings and projects

MRR
$218

Last 6 months ÷ 6

World#110,433 / 412k
🇺🇸Country#15,518 / 62.1k
Revenue, last 30 days
$0

Last 6 months: $1.3k

Total earnings
$5.4k

Billed in all: $5.4k

World#248,429 / 412k
🇺🇸Country#39,128 / 62.1k
Per project
$1.3k

$653 in the last 6 months

World#102,413 / 412k
🇺🇸Country#17,421 / 62.1k
Projects, last 6 months
2
100% fixed0% hourly
World#88,918 / 412k
🇺🇸Country#11,762 / 62.1k
Projects in all
4
100% fixed0% hourly
World#283,741 / 412k
🇺🇸Country#40,819 / 62.1k

Earnings, last 30 days

$5.4kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$5.3k$5.4k$5.5k$5.6kOct 8Oct 23Nov 7

Skill rankings: Top 25% in Concept Design

Ranked by MRR among everyone on Upwork with the skill.

  1. #39Plastic91 freelancers · 🇺🇸 #7Top 43%
  2. #110Injection Mold Design250 freelancers · 🇺🇸 #21Top 44%
  3. #351CAD Conversion823 freelancers · 🇺🇸 #50Top 43%
  4. #418Modeling1,281 freelancers · 🇺🇸 #90Top 33%
  5. #451Design for Manufacturing1,107 freelancers · 🇺🇸 #107Top 41%
  6. #460Concept Design1,824 freelancers · 🇺🇸 #69Top 25%
  7. #553Drafting1,743 freelancers · 🇺🇸 #103Top 32%
  8. #835SolidWorks2,691 freelancers · 🇺🇸 #167Top 31%