06-05-2020 SainSmart Pro-3 Series PLA Purple

I reviewed some material from Sainsmart before, and I’m still having some good contacts with these people. For that reason, I received a few new spools from them to test/review. This piece of prose will describe my experiences with their Pro-3 Series PLA Purple.

There are some interesting notes on their website about this product:

  • PRO-3 Filament is a new member of SainSmart 3D printing filament family. We use an innovative layer-by-layer spooling process while manufacturing the PRO-3 Series. This ensures each layer of filament is spooled perfectly! Also, you don’t get extruder jams like you do with other filaments. You will get a smoother finished product.
  • Each roll of PRO-3 has passed a multi-stage inspection to make sure it is free from contamination, particles, and air bubbles while maintaining high accuracy.
  • Inspected by laser, PRO-3 ensures each inch of the filament is precisely engineered to +/-0.02mm error rate.
  • PRO-3 is made from renewable resources, which is green and non-toxic.
  • A smart length indicator is present on the surface of the clear PC spool for your convenience to know the length of your remaining filament. You will love it.
  • Recommended extruder temperature: 180 – 215°C (356-419°F)
  • Recommended platform temperature: 40-60°C (104-140°F)
  • Printing speed: 90 to 150mm/s

A simple, clean, nice box. Nothing fancy, nothing boring. It provides you with the info you need to identify the material. It has a barcode to let SainSmart track back the lot of production, if needed. I only have 1 point of criticism here: In pic 2, you see that nor PLA, nor PETG, are checked. In this case, there is on another side of the box, a sticker that says PLA. But that meight be a little confusing. The material here has a diameter of 1.75 mm and the spool contains 1 kilogram of material.

When unpacked from the box, you get the reel in a vacuum sealed bag, including some silica gel and a sticker on the side with some info. Maybe 1 point of improvement? Put the brand on that sticker too. Why? When you’ve opened several different reels from different brands, it gets confusing not to remember the brand anymore. In the 1st pic you can see the markings on the side. These are to estimate how much filament is left on the reel.

The windings on the reel from Sainsmart were always amongst the best I’ve ever seen . Well, these weren’t any different.

Enough chit-chat, time to start printing. As usual is my first test the temperature tower. 0.2 mm layers. My eyes told me to use the 200°C for future printing with this material.

Test 2: a calibration cube: 0.2 mm layers, no supports and 0% infill. Normally I use 5% to make the name appear nicely in the top of the print. I forgot to set that 5 % and afterwards, I was surprised the material did actually print that good. I’ve noticed a little bit of stringing, even on 200°C. Nothing much and very easy to remove with a pass of a heat gun.

Next standard test: one of the owls. These are always printed on 0.15 layers and with 10% infill. Nozzle-temperature was here 200°C. Overall this was a result I found pretty good. Don’t forget the fact that pictures of ALL printed objects on this page, are seriously blown up The height of this owl is about 6 centimeters in total. In the last pic, you see again a few tiny strings.

Standard tests I run every time over and over again, are done. Time to do more testing on things for other projects. (The blue filament here is SainSmart Pro-3 Series PLA I have bought from them, but gives identically looking good results). Everything you see here is printed on 0.2 mm layers.

And then I found the sweet spot for my printer… Eureka!!!


  • A simple, clean box. Nothing fancy about it.
  • The spool was very well packed and had silicate inside the bag.
  • I like the markings on their spool, to estimate the rest of filament on the spool.
  • Recommended temperature windows by SainSmart are good.
  • No warping at all.
  • Stringing: just a little. Even at 200°C, which is already a low temp for my printer with the hardened RVS nozzle. Those are very easy to remove.
  • Bed adhesion: nothing less or more then ….. good.

Would I recommend this filament? Simply, YES.

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