Great product! Finally, a reliable laser-etchable material. It is not uncommon to be able to mark some 3d printable materials but knowing what will mark and how it will look in the end is a matter of tedious trial and error. This is the first filament I am aware of meant/sold just for this purpose. I hope they expand their line with more colors and materials but this a great starting point.
I am using an xTool F2, which is a galvo, and using the 5W IR to get these results. I have yet to experiment with a diode on this material.
For basic engraving: I am using 100% power and 1700mm/s, and 100 lines per cm. Use 2 passes to darken it up a little, but 1 pass still looks good,
For the image engraving, I am using 130 dot duration, 40% power, 500 dpi, and 1 pass
I am going to share this to the xTool material settings library so hopefully this will be selectable for everyone soon.
I ran many tests before settling on these recommendations; however, I am not an expert in this field, so please do your own testing before marking something important to you. The hope is this should at least get you started.
Thank you Protopasta!

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Great company. I've ordered from them a couple of times and their shipping is quick. Especially coming across country. The filament is top notch. Its pricey because its special and worth it! I've used this in 2 different machines and it printed perfect first try. Only tweak I made was dialing back the retraction for some minor string blobs. It polishes up beautifully and its strong. If your a geek, this is the filament for you. I printed a copy of my wedding band, and it looks awesome!

I went to my local Micro Center to get some yellow filament specifically for hummingbird feeder parts. Much to my surprise I found some Propasta fluorescent yellow 2.0 on the shelf. Ill admit it was more expensive than I would have liked, but its the first UV reactive filament Ive ever been able to find. Hummingbirds see in the UV spectrum, so I assume this filament is going to be amazing for the purpose of use. Ill be making a series of parts for my feeders that I hope keep the bees out, and give the humming birds better visibility of feeder location.

So far its printed well right out of the box. I didnt have to excessively dry it.

Ill also be printing some paintball accessories for my "glow ball" gear. Ill likely be back to buy more glowing colors soon!

This is a cool mix of 2 of my favorite Protopasta filaments!

Forest Fantasy Green and glow, I received a coil of this with the most recent Endless Exploration and immediately used all of it.

The glow absorbs light like a sponge in water, the lights in my IDEX Ratrig charge this stuff while printing, and the glow lasts longer than ANY other glow filament I have used so far. Like all of the other Protopasta filament this prints like a dream.

The attached photo shows this along with a generic tri-color matte PLA. Unfortunately I don't have any glowing photos. The object itself was designed by Pipecox, who makes some cool objects.

I grabbed a full kg of this and the nebula as soon as I saw they were for sale and I don't regret my purchase for a second, as a matter of fact I will probably be back for more next week.

Beautiful filament, color is great and unlike any other filament out there. Love that these guys are local! Prints very well on my Centauri Carbon using a slightly modified generic PLA filament profile. Look forward to doing more business with you!

Ordered this 100g sample pack a few weeks ago, and shipping was surprisingly fast, even coming all the way across the country! When it arrived, I tossed it on the workbench and honestly forgot about it for a bit. Fast-forward to today: I finally gave it a spin, and wow—this stuff printed like a dream right out of the box! The layer adhesion is fantastic, with barely any stringing (and what little was there was super easy to dial out in settings). Naturally, I had to put it through a torture test in my vise. It’s got a great weight to it and it's absolute tank status! Plus, it polishes up to a awesome finish. I’m hooked. I immediately went and ordered a full 1kg spool. It’s definitely an investment, but if you need a strong, heavy-duty filament for serious projects, this HTPLA is 100% worth it!

Printed on the reliable workhorse P2S with tungsten carbide nozzle, very safe test print about 20g. This stuffs density is heaven, I'm not sure what else you would use to get this feel. Give a raise to the person that allowed the small samples because I'm trying all your additive filaments now.

This was my first batch from my new subscription, all the filament colors sent to me this round are amazing

Gorgeous color!

The colors are fantastic, and printed with the excellent results I have come to expect from Protopasta materials.

Having multiple shipments of the same style enabled a larger print, and I ended up with 600g of fluorescent material, leading to a super cool project.