OVV3D Filament Storage Bags 30pcs, Plus Size 32X34cm 3D Printer Filament Storage Bags Vacuum Sealed Kit with 30 Desiccants, Auto Pump,Perfect for 3D Filament Storage or Using After Filament Dryer Box

I originally started looking for bulky cereal containers to store my 3D printer filaments and keep them dry, but I stumbled across this vacuum sealing system instead—and I am so glad I did! This system is incredibly easy to use and works perfectly for filament spools. Instead of lining my shelves with hard plastic containers that take up a ton of extra room, these vacuum bags shrink right down to the size of the spool itself. It is a massive space saver for my workspace. If you are on the fence or looking for a better way to organize and protect your filament from moisture, I would highly recommend this to anybody. Definitely a 5-star find!

I've used a few different dry-box storage options, and this one has worked the best for me for longer term storage. I've used about 10 or more bags already and only one hasn't held a vacuum very well. All of the others have stayed very tight for several weeks and appear that they will last for a long time. The bags are a bit tight getting the spools of filament in them. Don't expect to get a large spool in them, but the average size ones do fit. The vacuum pump works very well and will bend the filament spool sides in on partial rolls if you let it. It pulls a much higher vacuum than any of the other pumps I've used before and it gets a great seal on the bag when pumping. The only thing I have to do is remember to raise the bag a bit on a flat object where the pump seals so it will stay flat when getting pulled in tight. I'll definitely be buying this again if I ever need more bags. But since they are reusable, it may be a while before I need more.

There are numerous glowing reviews here, so perhaps I got a "bad batch", but these bags have been useless for me. The vacuum pulls very, very slowly, but I didn't expect a small hand vacuum to be all that powerful so that's not my complaint. I was able to use it on a few bags, but what I ran into is the vacuum not being strong enough to pull air out of the bags at all. Thinking it was the weak pump, I purchased a small hand-vacuum and that didn't pull air out either. This morning, I finally did a bigger test and tried to pull air out of 15 of the bags (new out of the box and therefore previously unused, with a spool of filament in them) with the hose attachment on a full-size floor vacuum cleaner and it didn't do anything on ANY of them, which tells me these valves are not working at all. It does seem odd to me that the first few bags I used worked okay (and have maintained great seals), but that other bags later have been failures. They have been stored at room temperature in a dry environment.

It takes forever to get any air out of the bag, the seal between bag and pump isn't very good. Real annoying. It works kinda, once you use your leg to back it up. But a bit too cheap it is. Previously purchased product much better.

I have to be honest. I didn't have high expectations for this one. The bags seemed flimsy and the pump was tiny. However, I was surprised at how much of a vacuum this tiny little thing can pull at the speed that it does. Granted there are other expensive options available that can do it faster, but for the price this pump is a bargain. The bags themselves are pretty heavy duty and seal my filament spools completely and as of now, I can't find any leaks. The locking clips make it so easy to seal the bags in a jiffy. All in all a great product and a must buy for anyone who owns a 3D printer and plans on buying/printing with multiple materials.

They are not very durable, I've only used 2 so far and besides being very thin both would not hold vacuum. Hope the rest will because out of the return window. If they get better I'll up the rating, if not I'll reduce it.

Is the best, to keep you filament nice and dry.. easy to use

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