Comgrow 3D Printer Filament Dryer Box, Comgrow 3D Filament Storages, Keeping Filaments Dry During 3D Printing, Compatible with 1.75mm/2.85mm PLA ABS Material, Filament Dehydrator, Spool Holder

Overall I am pleased, but I want to share how this performs.First off, the design changed a little from the pictures, it now has four holes for filament to feed through. Two on the top , as shown, and now two more on the front. All of the holes have silicone seals to close them off, so this is an improvement.Now for the results of my testing. I put a hygrometer inside the case and graphed the results. The unit dries the filament very slowly, so if you have filament that is very moist, you’ll likely need to run this for days to dry it. I averaged around 0.6 to 0.7% per hour (takes about 4 hours before it starts dropping). So it’s slow and steady, which is not a bad thing. Once you have it fairly dry, it will start absorbing moisture again (even if you don’t open the case).In my tests, once the drying cycle completes, the humidity inside the enclosure will start to gradually increase again. Slower than the drying cycle, but steadily increasing. The case has no openings except for filament holes (plugged for testing) and the joint between the base and lid. The drying is accomplished by heating and a small fan that just circulates the air inside the case (it is not vented to the room). So for the humidity to drop the moisture has to be seeping through the joint between the base and the lid. So when the cycle stops, the reverse starts to occur.Final thoughts: I am not pointing this out as a flaw (I still gave it 5 stars), but rather to help others to understand how the device works/behaves. So now I know that the device will need to be run periodically to maintain the target moisture level in the filament AND that the dryer itself is not a good long term storage box. Once filament is dry and won’t be used for a while, it should be stored in something that is air tight to maintain the proper moisture levels.

Was initially underwhelmed by this Filament Dryer, but now that i'v been using it for a while, it has done a remarkable job at drying out all of my PLA and PETG and even silica packets that i recharge in it sometimes. The max temp is 50c, and I know some people say you NEED hotter for PETG, but after using this to dry out many spools of PETG now, I can confidently say that this dryer does the job quite well. Water is water, dry it overnight and it all drys away.Just remember to crack open the lid every now and then to let out the "wet" heated air, and don't leave too big of a gap, iv learned that somewhere between half an inch to less than half is the sweet spot.One thing i'v noticed is that the external power brick also gets quite hot, and i'v been tempted to screw it right onto the dryer, to use some of its heat, but i'm no electrician and im sure they separated the power brick for a good reason.

It just works. It's good. All other filament is inferior to this filament. Do yourself a favor and get this and only this.

Thing does it's job nice and dry also great smell! But honestly them buttons are really the biggest downfall. There's not a lot of ummm things there yaknoww like there could be a lot more options or better freaking controls. Only thing missing that 5! Overall pick this thing up I'll buy 5 more definitely harder to recommend

Husband is very happy with this. Living in the South where it's humid this has come in handy to keep the filament dry and ready to use. It's worth the price comparing to the filament we lost to the humidity.

Affordable, prints like the bigger brands, and is as strong as you make it. It is the perfect shade of yellow, and wound nicely to prevent tangles. Works great.

So first off, I'm new to 3D Printing but not to technology and understanding how to fine tune things to get them to work. I am basing my review of this filament as compared to the small filament sample that is included with the Ender 3 V2 on purchase.I bought this filament, alongside the Ender 3 V2 and the CR Touch from Comgrow as part of a sale/discount. I knew I was going to need more filament than what the printer comes with, so figured I'd give Comgrow's filament a shot since I already had the order for everything else ready to go.This filament is very picky about bed adhesion. Even with a bed leveled to ~0.18 variance and the Z-Axis offset appropriately set, it can be very difficult to get this filament to stick to the bed. Once the first layer is down though, the quality of prints have been amazing.For my Ender 3 V2, I found the following settings and experiences to work the best. There's still a lot of baby sitting in the initial layer, so be aware.210C nozzle, 65C bed.For first layer: 50% Print Speed (or lower if lots of curves), 0% fan speed.After first layer: 100% Print Speed, 100% fan speed.Always print with a brim. 5mm minimum. While the printer is printing the brim, monitor it for adhesion. It'll also give your actual print better adhesion since the initial layer will be bonding to both the bed, and the brim.On any nozzle temps over 195C, I find that this filament likes to extrude during the initial print setup, and will commonly curl back onto the nozzle and gunk it up. Anything less than 200C, and it won't adhere to the bed on the first layer. Due to this, pay attention during the first couple of line prints to make sure the nozzle doesn't have excess filament wrapped around it and that it has shed it correctly. You may need to use the needle like tool to "guide" the filament off of the nozzle before your main print starts.The filament sticks to itself amazingly, so once the initial layer is done you can ramp everything back up to 100%. I've included four photos, one of the initial layer brim of a current print going down problematically (had to lower my z-offset on the fly by 0.1 to resolve), and three photos of a print I finished yesterday.As a beginner, I like the way this stuff prints/looks after the fact but I really dislike how much babysitting I have to do with the initial layer. The filament that came with the printer was not so picky, and I'm looking forward to finding similar filaments as that. The reduced print speed in the initial layer paired with the babysitting increases the amount of time I have to actively spend to ensure that the print is going to succeed.I wouldn't buy this filament again unless I was being very picky about the aesthetics of my print, because this stuff does look great. I would not recommend it to a beginner.

Does what it says. The little holes where the filament can be channeled out of are at kind of an awkward angle for my printer though, which can cause a considerable amount of tension. At one point it was even enough to pull the whole dryer over an inch. That said, I bought it to dry; not to store.