OVV3D Filament Storage Bag Kit 66 Pcs 3D Printer Filament Storage 30 Bags Vacuum Seal Kit with 30 Desiccant Automatic Pump Ideal for 3D Filament Storage or Filament Dryer Box Use

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.

I did not have high expectations for this when I bought it. I have been pleasantly surprised. This system works amazingly well. I add a small hygrometer to my sealed bags of filament. Typical in-bag humidity with a roll of filament runs around 20-25%. The bags last for a few (roughly 5-10) re-uses. The little plastic clip to help seal the bag is not as silly as it seems. the bags are double sealed and the little plastic sealer clip helps line things up nicely. The electric vacuum pump is a little slow, but really not too bad considering how much vacuum it creates. It takes me about 10-20 seconds to seal up a bag.Note to OVV3D: Please make a clear plastic box version. If you have several colors of filament (who doesn't) the bags can be a little tricky to stack on a shelf.

I've had these for a while now and I'm disappointed.The air pump seems to work fine, and I was pleased at first. Put my filament in the bags, sucked out the air, and put them on the shelf. However, I'm finding that about 50% of the time when I go to get a filament off the shelf, it's no longer vacuum sealed as the bag has inflated and there's are inside.I'm not sure where the actual failure point is, as it appears the air is leaking in slowly. It could be the zipper, because it is very hard to close it. It doesn't seem to lineup quite right. I go back and forth over the zipper several times to make sure its sealed as best as I can. It could also be the air valve that is failing.Whatever the issue is, it's kind of a pointless product if it can't actually stay sealed.

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.

I ought this to store partial rolls of filament. Although I live in a fairly dry area, I have had some spools unusable when stored for a period of time. I bought the kit with the electric vacuum pump and I must say it works great. I have resealed over a dozen spools and had no problems pulling a vacuum in these bags that looks the same as the bags the spools were shipped in when new. So far after a few months, I haven't had any lose their seal. The vacuum pump is battery operated and is rechargeable. This kit comes with the pump, bags of desiccant, clips to assist in closing and sealing the bags and bags. All in all it's a pretty decent value. It works well, is reliable and if needed I will buy again.