Review & Teardown: ComMarker B4 20W Fiber Laser Engraver

This whole video was worth it for the custom ripple clamp. Thank you for the first audible chuckle of my day.

Marco, i want to see how you make your high precision resistors, i think you have almost everything that is needed, amazing projects are on the horizon

I'd rate safety "Extremely scary / 10" for this one, but the free-hand Retina-Remover function puts it squarely in the "Accident from Ebay / 10" range.

You can put thermal paper under gogles to check if some light went. I would burn or blacken

"Should we look at a femto-second laser someday? Since I already have the goggles." Sure. Go for it. If you can get one.

The reason for the "warranty void" label on the MAX laser source is meant to keep you from getting nightmares after having seen the inside 👻. As I understand, MAX is on the cheaper side of fiber lasers. Raycus is next and JPT is top of the line of affordable IR fiber. I'd love to see both types being sent to you to take them apart all the way 😁 The EzCad 2 software is nice but I recently switched over to LightBurn (for Galvo) and that is a huge upgrade. The dxf/svg import is much better and has better path closing options. Most of the times, the trace image feature most of the times works great to convert bitmap images into good line art.

Fantastic video as always! I always wanted to see inside one of these fiber lasers!

For PCB do 3X more pass trought with same speed but only 27% of power there will be no overheating.-.- set freq in to 38-41Khz (copper and brass optimal absorbtion freq) if that still burn you have to shift it in to 51+kHz... When you cut ''trought'' use 2 same vector with HATCH, for example you want 3cm ring.. so set another vector with comon center with weight 3,05cm and that 0,05 gapp fill with HATCH.. that will do the cut.. Agains engrave that by fast pass with every pass rotate the angle by 3degree.. Instead of hard power cut trought and oveheat and melt that material.... i do cut silver and inox like this without overheating.,. trust me if you have any question?? PM me..

Love the up close and detailed shots! Amazing what these can do for the price range.

I feel so blessed by this ger man

Marco on fire! Einfach geil, wie viel du gerade rausballerst!

2 uploads in 2 day! Praise be!

Your humor is super good!

Yes Marco, KEEP THE UPLOADS COMING AAAAH :DD

I have no need for this product. On the other hand, my need for Marco Reps videos is INSATIABLE.

Love your teardown videos. And the jokes in the videos are sure hilarious. Thanks

I just checked the kickstarter video. I lasted about 15 seconds before closing it. Your insight is way better.

Spend your time engraving rings, great video

You have a very serious voice... I love it

another great video!