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JPT MOPA 30W Fiber vs ComMarker B4 — Which Should You Buy?

Side-by-side specs, settings, and decision guide. Both have community-tested settings for 11 shared materials.

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See the latest price for the ComMarker B4

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Which one should you buy?

Pick the JPT MOPA 30W Fiber if you want: more cutting power (30W vs 20W).

JPT MOPA 30W Fiber

Power
30W
Laser Type
fiber
Software
EzCad2LightBurn

ComMarker B4

Power
20W
Laser Type
fiber
Software
LightBurn
Buy ComMarker B4 →
36 settings for JPT MOPA 30W Fiber15 settings for ComMarker B4

Settings Comparison

Material · OperationJPT MOPA 30W FiberComMarker B4
Aluminum Dog Tagengrave2200 mm/s · 26%—
Aluminum Keychainengrave2200 mm/s · 26%—
Anodized Aluminumengrave2500 mm/s · 20%3000 mm/min · 55%
Bare Aluminumengrave2000 mm/s · 28%—
Black Anodized Aluminumengrave2800 mm/s · 18%—
Black Oxide Stainless Steelengrave950 mm/s · 60%—
Brassengrave—1500 mm/min · 75%
Coated Stainless Steel Tumblerengrave1200 mm/s · 50%2500 mm/min · 70%
Powder Coated Aluminumengrave900 mm/s · 65%—
Powder Coated Steelengrave800 mm/s · 70%—
Stainless Steel Business Cardengrave1000 mm/s · 55%—
Stainless Steel Tumblerengrave1000 mm/s · 60%550 mm/s · 90%
Stainless Steelengrave300 mm/s · 70% · 3× passes150 mm/s · 80% · 2× passes
Aluminum Dog Tagmark600 mm/s · 70%500 mm/s · 70%
Anodized Aluminummark2000 mm/s · 80%1500 mm/s · 80%
Bare Aluminummark—500 mm/s · 70%
Black Anodized Aluminummark2500 mm/s · 100%2000 mm/s · 100%
Brassmark1800 mm/s · 38%500 mm/s · 70%
Carbon Steelmark1000 mm/s · 50%—
Chrome Plated Steelmark1400 mm/s · 40%—
Coated / Powder Coated Steelmark—500 mm/s · 60%
Coppermark900 mm/s · 65%200 mm/s · 90% · 2× passes
Gold-Filled Jewellerymark1400 mm/s · 25%1000 mm/min · 35%
Nickel Plated Steelmark1300 mm/s · 42%—
Silver Jewellerymark1100 mm/s · 32%—
Stainless Steel Dog Tagmark1100 mm/s · 55%—
Stainless Steel Keychainmark1100 mm/s · 55%—
Stainless Steel Knife Blademark1100 mm/s · 55%—
Stainless Steelmark1000 mm/s · 55%300 mm/s · 50%
Titaniummark700 mm/s · 40%200 mm/s · 35% · 2× passes
Zippo Lighter (Chrome)mark1400 mm/s · 38%—
All JPT MOPA 30W Fiber settings →All ComMarker B4 settings →

Frequently Asked Questions

Which is better, the JPT MOPA 30W Fiber or ComMarker B4?

It depends on your use case. JPT MOPA 30W Fiber is 30W fiber. ComMarker B4 is 20W fiber. See the decision guide and side-by-side specs above.

What materials can both the JPT MOPA 30W Fiber and ComMarker B4 cut or engrave?

Both machines have community-tested settings for 11 shared materials. The settings table above lists every material with side-by-side speed, power, passes, and air assist values for direct comparison.

Is the JPT MOPA 30W Fiber (30W) much faster than the ComMarker B4 (20W)?

Higher wattage typically means faster cutting and the ability to cut thicker material in fewer passes. The JPT MOPA 30W Fiber (30W) cuts thicker material in single passes and engraves at higher speeds than the ComMarker B4 (20W). For raster engraving the difference is smaller because surface engraving is limited by mechanical scan speed.

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Settings are community-contributed and may not reflect your exact machine configuration or material batch. Always test on scrap first. Some links are affiliate links — we may earn a small commission at no extra cost to you.

What Makers Say

★★★★★5.0· 6 reviews
View all on Etsy →
★★★★★

"Used it with a Glowforge — engraved beautifully with no changes. I will be purchasing more digital downloads from this shop."

— Anna

★★★★★

"I was struggling with lining up my NFC business cards. I was able to not only line them up much better but also do multiple cards at once — making that job so much easier."

— Camp

★★★★★

"Excellent quality and design. Cut clean and neat!"

— LYNN

★★★★★

"Great jigs. Appreciate the time saved not having to build this from scratch!"

— Bruce

★★★★★

"Excellent quality. Item as described. Expectations exceeded."

— Michael

★★★★★

"This template made my slate coasters so much easier. 4×4 coasters from Michaels drop in easily and are easy to remove. Def worth it."

— chris

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