Polymaker Light Weight PLA Filament 1.75mm LW-PLA Grey 0.8kg Low Density 3D Printing Filament, PolyLite 3D Printer Filament Grey, Print with Most 3D Printers

The important bits: layer bonding and strength is incredible! very rigid and much lighter than PLA or PLA+ but heavier than foaming lightweight PLA. I am going to use this on all my future 3D printed planes!Now my long boring story :)Patience was the key with this filament! I have seen too many great reviews to think that there was an issue with the filament itself. I took the recommended approach of printing using PLA settings and increasing the retraction distance and speed to the settings recommended on polymakers website.My prints were completely unusable initially. I didn't have a lot of time after work to run calibration tests but I did what I could in my free time. I would change one setting and print a part, I didn't write anything down and I didn't keep track of my changes. The poor print quality was completely my fault for not taking the proper time to dial in the print settings. I even tried multiple slicers!I finally had a day off! no chores, no work... time to get this right :)I started with the basics, e-step calibration and PID tuning. Those were very close to perfect already so I knew that wasn't my issue. I started back with the defualt PLA settings and did a retraction test (two 10mm cubes spaced 40mm apart). I would do a print and take a picture, record the settings and results and then make only 1 change to 1 setting at a time until I got the setting dialed in. Then I would move to the next setting. Rinse and repeat until I got everything dialed in. About 10 hours later, a nearly perfect print with just the smallest amount of stringing!Don't do what I did and just get frustrated and start throwing different settings at this stuff! It took the perfect mix of speed, temp, retraction speed & distance as well as extra prime after retraction to get this stuff dialed in. A change to any one of those setting will throw off the print!Cura 5.10Artillery Sidewinder X2 (love this printer!)Fulament magnetic flex PEI bedTemp 190Bed temp 60 (I always run 60 for everything, just seems to work)Print speed 40mm/sTravel speed 250mm/sRetraction 3.5mmRetraction Speed 35mm/sExtra prime after retraction .36mmMy issue was an extreme amount of stringing and oozing. I am printing a single walled print and it is important to have a strong Z seam. The loss of material during travel moves and layer changes made the Z seam very weak.

This filament is amazing. Drop it in, print with your normal settings and your prints are lighter. The filament is STRONG!! I have printed a number of rockets with a .6 nozzle in vase mode and a blow to the print with hammer wont break it! This stuff will be amazing for some of my upcoming drones and other RC aircraft. The filament bonds extremely well for each layer. I've tried the grey and the black but the black is beautiful. The filament has almost a texture to it when printing so your prints may need some sanding for a smooth finish but the filament sands wonderfully. This filament was used to win a regional 4H Aerospace competition and will be going to the state finals. Thanks Polymaker for making some great filament.

prints nice and is light weight but the winding job on the spool leaves little to be desired. keeps getting stuck and quits printing in the middle of the print and its wasted. that's why I give it 1 star.

So this is my first time using this filament, I have used dozens of others in my print farm. I wanted to print a RC airplace and its doing a great job with a few issues. The settings I use worked on a couple of printers. Because it doesnt stick well onthe first layer I used 0.3mm first layers with a brim of at least 3mm. It get very stringy over 200C, in fact if its a small part you need to start at 190C and do the rest at 192C to get good layer bonding, and it does bond very well, but only with an extrusion multiplier of 1.15. I printed two of the same center wing parts, one in PLA+ and the other in this, the PLA weighed 18g and the LWPLA weighed 15g not a huge difference but enough. I also like the texture of the finished parts, it foams a little so you have a hard time seeing the print lines. One last thing, before printing the fillament is a little brittle, if your printer bends it around a small radius it will snap.

I used this for printing some RC aircraft parts and found that if you follow the instructions the filament performed as advertised. On my avg part I noticed a 20%-45% reduction in weight from standard PLA. One thing to note, this is ***Pre-Foamed***. I have read reviews were people were upset because it did not foam and they had to crank the temps up to get any foaming/expansion of the filament. It is not that type of LW-PLA. This prints better at lower temps, I found 190-195 to be the sweet spot for my parts. It is also not a smooth filament as it is pre-foamed it has a rough texture, to be expected.It prints great and with a nice smooth surface that is easily sanded where needed.

Once you figure out the temps. This lw filament wedges in the side of reel. I had to restart my print because of it several times. Also I had to run my extruder temp. at 220°C on my bambu p1s so it would print right. Best thing to do with wedging of filament is to un roll it onto another reel.

This stuff is the real deal BUT:1. You have to take your time and dial it in on your printer. I did a lot of research online and got some idea of where to start with settings, but I still had to play and tweak them to get good results.2. You GOTTA PRINT SLOW. the parts will take time.3. No matter what you do you will have a some amount of stringing. Seam placement is vital and you can set it so the stringing is easily trimmed off.4. If you are doing airplane parts you have to know how to use Height modifiers in your slicer.If you take your time and really dial this stuff in you will get amazing parts, light, no layer lines, accurate. I'm totally impressed with this stuff.

This filament is lightweight and easy to print with. No messing around with temps and so on, I use my preset PLA settings for this with the only adjustment being "0" fan speed (reduces stringing) and print at 30mm/s. My prints have turned out great, this will be my go-to for all my RC plane prints!