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Yeah, they are pricey... eSun, Polymaker...
But maybe a Rosewill Food Dehydrator...$40. Get (2) 1KG rolls in in. But I'd rather have the pricier ones with built in outlet for filament, but can modify the cheaper one.
If your printing a lot of hygroscopic filament such as Nylon, I'd at least invest in 1 of the better ones.
Humid here, been getting the same thing with PETG after printing for a couple days. You can reduce the moisture effect by printing at a lower temp but eventually you’ll likely need to put your filament in a dehydrator. These work with a little modification to remove the unnecessary grating between layers: Rosewill Countertop Portable Electric Machine Food Fruit Dehydrator https://www.amazon.com/dp/B018UR4XJI
I personally use this one but it's currently a bit more expensive than usual. I often see it for ~$45. There are others similar, and if I had to do it again I would probably pay a bit more for one that has an off timer.
This is the one I have it works pretty well. I saw cnc kitchen used this one. You have to cut the racks to fit the filament but it works really well. Your print doesn’t looks bad btw. But I know how it feels to try and prevent blemishes.
Rosewill Countertop Portable Electric Machine Food Fruit Dehydrator https://www.amazon.com/dp/B018UR4XJI/ref=cm_sw_r_cp_api_i_07MB0M22531HFF92KA73?psc=1
Dry dry dry your nylon. I used a freshly opened package and it was still wet. Also nylon doesn’t take well to cooling, i use about 5% max on my fan. I also print mine a good bit slower, like 25mm/s which is probably a bit overkill, but with how expensive some nylons are, i like to make 100% sure my prints are mint. I use a food dehydrator from amazon with a printed turntable on the inside with a bearing so it can print directly from the dehydrator. here is the link for the one i got, i just turn the heat all the way up, and leave it for a day and change, and then start printing out of it while leaving it running.
This dehydrator works Well and has been sold under different branding as a filament dryer For about $100. I have the same unit with different branding, and I can verify that it will effectively dry filament with proper heat settings and time. You do need to trim out the center of the food trays to fit in filament spools, but this is a trivial task. https://www.amazon.com/Rosewill-Countertop-Dehydrator-Adjustable-RHFD-15001/dp/B018UR4XJI/ref=sr\_1\_3?crid=3KSESQMZ6RLV6&keywords=rosewill+dehydrator&qid=1645893229&sprefix=Rose+will+dehydra%2Caps%2C121&sr=8-3
I don’t use PLA so can’t speak to the behavior of silky filament but I do use PETG which absorbs moisture easily. I modified a cheap food dehydrator and can dry a couple rolls at same time in it. It does an excellent job, just a bit noisy.
If interested, the one I bought is here: Rosewill Countertop Portable Electric Machine Food Fruit Dehydrator https://www.amazon.com/dp/B018UR4XJI
Just have to cut the plastic mesh out of each rack, easily done with the snips that come with most printers.
I modified a cheap food dehydrator and can dry a couple rolls at same time in it. I use primarily PETG which absorbs moisture faster than PLA and I find it a necessity and it does and excellent job (just noisy).
If interested the one I bought is here: Rosewill Countertop Portable Electric Machine Food Fruit Dehydrator https://www.amazon.com/dp/B018UR4XJI
Rosewill Countertop Portable... https://www.amazon.com/dp/B018UR4XJI?ref=ppx_pop_mob_ap_share
This is the dehydrator I got, you have to cut 2 trays to get it to fit a filament. Works really well. Do this retraction test instead of a retraction tower. Retractioncalibration.com
Oh god! I wasn’t suggesting using an air fryer for filament dehydration.
I use a dehydrator that I dedicated to filament. No food goes in it. I picked this one up based on a YouTube recommendation. (Don’t remember who.)
Rosewill Countertop Portable Electric Machine Food Fruit Dehydrator https://www.amazon.com/dp/B018UR4XJI/ref=cm_sw_r_cp_api_glt_fabc_6R2TV10CPDY79RN8Q5CF?_encoding=UTF8&psc=1
You have to take the trays and cut the tray part out so you’re just left with a series of plastic rings. The flush cutters most printers come with work great for that. Then just stack up the rings and set a roll or two in there with the center of the spool over the center hole of the dehydrator.
I run mine at 45-50c for a day on any spool I’m pulling out of storage and it’s really helped with stringing and stability.
Rosewill Countertop Portable Electric Machine Food Fruit Dehydrator
I printed an extension “wall” to allow for a full spool to fit as the stock trays are too short. I can’t find the STL at the moment... but there are a ton on thingiverse.
You can buy a food dehydrator on amazon for like 30 something bucks and then you just cut out the tray part from each stacking ring and there you go! Took me like 10 minutes and it is perfect for drying PLA and PETG.
Rosewill Countertop Portable Electric Food Fruit Dehydrator Machine with Adjustable Thermostat, BPA-Free 5-Tray RHFD-15001 https://www.amazon.com/dp/B018UR4XJI
Similar (prob identical) models can be had from Ali express for cheaper if you don’t mind the long shipping time.
Also if you want to print from the dehydrator you can put a lazy Susan in there and make a little hole to feed filament through. This is exactly what the filament dryer and feeder they sell for 100 bucks is constructed of.
I use a food dehydrator. Has selectable temperature, so I can dry out different filaments (ABS, TPU, PCTPE, etc) at appropriate temps.
I cut out the centers on most of the trays, left 2 intact, to fit spools and have the ones I didnt remove the centers on to use as separators to dry multiple spools at the same time.
It's hard to recommend a specific one since they seem to come and go rather quick. If you can afford it, go for one of the square models with removable trays. They will typically fit multiple rolls without modification. If cost is an issue, many of the round models can be modified (cut the centers out of all but the lid and the bottom tray) to fit one or more 1kg spools. Just make sure to get one with a temperature control.
This is the one that I have. It'll fit two 1kg spools, and it'll just barely fit one 5kg spool.
I got this one and it seems to work pretty good.
Just need to cut out the plastic grate with a pair of flush cutters. Wear eye protection when you do this.
It seems that a lot of the dehydrators that look like this are just re-branded versions of the same product. Probably can't go wrong with anything that looks similar.
As I said to another redditor below, I only chose this because it was within my allotted budget, was rectangular instead of round (fits into spaces more effectively) and something I didn’t add was that it also had decent reviews. I suspect even the cheapest dehydrator would get the job done, and I’ve seen many posts of people who swear by their cheapo dehydrators, so really it’s a matter of preference and budget.
This dehydrator seems like a decent one, based on price and rating, but the rating is only based off of 180 reviews. There was another with higher ratings but the size of the dehydrator itself seems significant smaller.
How dry is your PETG? It needs to be seriously dry.
Get a $35 food dehydrator (desiccant packs won't dry filament, they'll only keep it dry) and dry your PETG for 6 hrs at 65deg C/149deg F.
I dry my PETG after every print before bagging it back up too, just leaving it out while printing will let it soak up enough moisture to affect print quality.
I bought one of these: https://www.amazon.com/dp/B018UR4XJI and it was one of the best "3D printer upgrades" I've ever purchased. Makes a big difference. ESPECIALLY if you print PETG, it is almost a necessity IMO.
It has another use - I saved my daughter's phone after she got it wet and totally unresponsive, couldn't even switch it off. It works better than rice or desiccant and dries the phone in 2-3 hrs. Try and grab a used one from a goodwill or something if it's just for filament.
I got this one, it's a bit grumbly when running but I just keep it in the basement: https://www.amazon.com/gp/product/B018UR4XJI
Then printed walls: https://www.thingiverse.com/thing:3470025
Here's another option, with improved connectors https://www.thingiverse.com/thing:2669646
That way, I didn't have to hack the shelves up.
Try this. https://www.amazon.com/gp/product/B018UR4XJI/ref=ox\_sc\_act\_title\_1?smid=A3K929QT0IENFR&psc=1
^Item&nbsp;Info | Bot&nbsp;Info | Trigger
I use a Rosewill food dehydrator . A lot of people cut middle out of the the plastic trays that come with it to put the spool in, but I printed some walls instead so I can still use the trays to dehydrate food. I run it 4 to 6 hours at 50C for PLA and 70C for PETG.
I converted this to a filament dehydrator. Just cut the centers out of the middle racks. Works great and a good price. Rosewill Countertop Portable Electric Machine Food Fruit Dehydrator https://www.amazon.com/dp/B018UR4XJI
https://www.amazon.com/dp/B018UR4XJI/ has a nice temp setting
Cheap food processors can easily be modified to fit spools of filament. This is what I use: Rosewill Countertop Portable... https://www.amazon.com/dp/B018UR4XJI?ref=ppx_pop_mob_ap_share
I've had this one for 2 years and it's served me well
I’ve had pretty good success with a cheap food dehydrator. Rosewill Countertop Portable... https://www.amazon.com/dp/B018UR4XJI
Spend the forty-five bucks on a dehydrator, cut the trays out of the rings, and set it to 45-50c
Rosewill Countertop Portable Electric Machine Food Fruit Dehydrator https://www.amazon.com/dp/B018UR4XJI/ref=cm_sw_r_cp_apip_fIkfAMprl7vPJ
This is the one I bought for $32.99 last year... Seems it went up a bit since then, but still quite affordable. 🤔
Rosewill Countertop Portable Electric Machine Food Fruit Dehydrator https://www.amazon.com/dp/B018UR4XJI/ref=cm_sw_r_cp_apip_pcZ7oDq1gHQy7
Grills cut out.
I bought this one, cut out the center supports with a pair of dykes, then I can dry two at a time, used it with both PLA and PETG for about a year now:
I have this one, but it looks like it's out of stock on Prime right now. There are similar ones, as long as it has a manual temperature setting you should be fine.
I bought mine off of amazon for around $40.00 USD.
I'm using a Nesco FD-61 with the mesh of the trays cut out, Printdry has a custom one with trays that will fit most rolls or if you don't mind modding there are OEM and rebranded versions of the same base unit for less. Most guides I've seen recommend 15-20C below glass transition temp of the filament for at least 4 hours so PLA would be at 45C, PETG 65C etc. Most ovens have a harder time or are impossible to get to the "low" temperatures needed plus it needs a convection mode to circulate the air. Taulman has plans online for a 5 gallon bucket drying setup using a lamp meant for higher temp materials like ABS and PETG which you may be able to get to work with PLA with lower wattage bulb or leaving the lid cracked open.