Uploaded March 2026 | Updated September 2026, 2 weeks ago
This doesn’t behave like TPU.
At all.
We took Siraya Tech’s Roamr TPU Air HR (80A) and ran it through full mechanical testing… and what it does under load is something most flexible filaments simply can’t replicate.
So now the real question is:
Are we finally at the point where 3D printed shoes actually make sense?
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
👟 THIS MATERIAL WAS BUILT FOR ONE THING
Performance under movement.
Not static parts.
Not gimmicks.
This is designed for:
3D printed footwear
Energy return components
Impact absorption
Wearable flexible structures
And more importantly…
👉 It’s designed to give energy back, not just absorb it.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🧪 WHAT I ACTUALLY TESTED (NO BS)
Same protocol. Every time. No exceptions.
Break load / peak force
Stretch + elongation
Rebound behavior (this is where it gets interesting)
Layer adhesion under stress
Real-world prints pushed to failure
If it’s in my database — it went through this.
No marketing fluff.
No “it feels good” reviews.
Just data + real-world results.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
⚠️ HERE’S WHERE IT GETS INTERESTING
Most TPU:
→ absorbs energy
→ deadens movement
→ feels “soft”
This…
👉 behaves more like a spring system
And that changes everything for:
Shoes
Insoles
Functional flex parts
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
👟 YES… I PRINTED SHOES
Because that’s the only test that actually matters here.
👉 Full shoe video coming soon (this is where things get serious)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
📊 COMPARE IT YOURSELF
I don’t test in isolation.
See how this stacks up against everything else:
👉 Materials Testing Chart: react-ivn1sokr.stackblitz.io
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✅ SUPPORT THE WORK
If you want more testing like this:
👉 ko-fi.com/edgeof3d
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🔗 LINKS
👉 Siraya Tech Roamr TPU Air HR Amazon Affiliate Links
80A - amzn.to/4brBRgN
85A - amzn.to/4uQHT2m
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🌐 FOLLOW
👉 twitter.com/edgeof3d
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
👉 My Voron Standard for Testing:
0.2mm Layer Height
0.4mm forced line width
4 walls
5 top/bottom layers
40% infill (Grid, Gyroid, Honeycomb, Triangle or Cubic)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
#3DPrinting #TPU #FlexibleFilament #SirayaTech #Roamr #TPUAirHR
#3DPrintedShoes #AdditiveManufacturing #FilamentTesting #MaterialTesting
#Engineering #ProductTesting #3DPrint #FDMPrinting #3DPrintingCommunity
#FunctionalPrinting #Flexible3DPrints #EnergyReturn #EDGEOF3D
This doesn’t behave like TPU.
At all.
We took Siraya Tech’s Roamr TPU Air HR (80A) and ran it through full mechanical testing… and what it does under load is something most flexible filaments simply can’t replicate.
So now the real question is:
Are we finally at the point where 3D printed shoes actually make sense?
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
👟 THIS MATERIAL WAS BUILT FOR ONE THING
Performance under movement.
Not static parts.
Not gimmicks.
This is designed for:
3D printed footwear
Energy return components
Impact absorption
Wearable flexible structures
And more importantly…
👉 It’s designed to give energy back, not just absorb it.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🧪 WHAT I ACTUALLY TESTED (NO BS)
Same protocol. Every time. No exceptions.
Break load / peak force
Stretch + elongation
Rebound behavior (this is where it gets interesting)
Layer adhesion under stress
Real-world prints pushed to failure
If it’s in my database — it went through this.
No marketing fluff.
No “it feels good” reviews.
Just data + real-world results.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
⚠️ HERE’S WHERE IT GETS INTERESTING
Most TPU:
→ absorbs energy
→ deadens movement
→ feels “soft”
This…
👉 behaves more like a spring system
And that changes everything for:
Shoes
Insoles
Functional flex parts
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
👟 YES… I PRINTED SHOES
Because that’s the only test that actually matters here.
👉 Full shoe video coming soon (this is where things get serious)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
📊 COMPARE IT YOURSELF
I don’t test in isolation.
See how this stacks up against everything else:
👉 Materials Testing Chart: react-ivn1sokr.stackblitz.io
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✅ SUPPORT THE WORK
If you want more testing like this:
👉 ko-fi.com/edgeof3d
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🔗 LINKS
👉 Siraya Tech Roamr TPU Air HR Amazon Affiliate Links
80A - amzn.to/4brBRgN
85A - amzn.to/4uQHT2m
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🌐 FOLLOW
👉 twitter.com/edgeof3d
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
👉 My Voron Standard for Testing:
0.2mm Layer Height
0.4mm forced line width
4 walls
5 top/bottom layers
40% infill (Grid, Gyroid, Honeycomb, Triangle or Cubic)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
#3DPrinting #TPU #FlexibleFilament #SirayaTech #Roamr #TPUAirHR
#3DPrintedShoes #AdditiveManufacturing #FilamentTesting #MaterialTesting
#Engineering #ProductTesting #3DPrint #FDMPrinting #3DPrintingCommunity
#FunctionalPrinting #Flexible3DPrints #EnergyReturn #EDGEOF3D
