Frux Up a Perfectly Good Food Dehydrator / 3D Printer Filament Dryer
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- Опубликовано: 19 янв 2022
- The original temperature control was not accurate, so I decided to install a PID temperature controller. This is not really recommended to do, but this is how I set up my food dehydrator to dry my filament. The temperature control I bought from amazon was way more accurate than the thermostat control originally in the food dehydrator.
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Your video inspired me and I just did the same thing to the identical food dehydrator for my filaments. I wanted a little more resolution and purchased a PT100 sensor instead of the K model that came with the controller. I like seeing the decimal place as it lets you know what is going on. My controller, an REX C-100, won’t show decimal places with a K style sensor. Also, I turned off the digital filter by setting it to “0”. This allows you to see instant temperature changes instead of having to wait as the controller smooths out any changes on the display. This mod really works! What a difference. The mechanical thermostat fluctuated widely. The PID unit now keeps the temperature within a 1/2 degree of the set point. Thanks for posting this.
Thank you for watching!
Any additional settings needed to be changed in the pid controller to swap from the original sensor to a pt100 sensor? Or can you just plug it in and adjust temp as shown in the video? Thanks
@@jmangus83 yes, you need to select the new sensor model in the controller settings. I also ran the auto tune feature which worked perfectly. Currently, the temp cycles between 49.8 to 50.3 degrees C. That is good enough for me.
@@davidgeorge8541 thanks for the reply. I'll be sure to look into that. Im guessing the pt100 sensor is more accurate?
I'm still trying to figure out the wiring, mainly the line and common wires. I've got everything else hooked up, but I can't tell how he tied the transformer wires into the pid, into the on/off switch. Am I supposed to make a jumper and tie all the hots and neutrals together?
What a funny coincidence, I just bought two of that exact model of dehydrator for converting into heated filament dispensers. I dry my filament in a large food dehydrator that has a temperature controller built in, but it's not suitable for dispensing filament from to print. These should keep the filament dry while I print if I put dry filament in them. I hadn't considered adding a temperature controller, but seeing your video and process I think it's a no brainer. Thanks for sharing. I appreciate your camera work and lack of annoying music.
Awesome video, never check how accurate my food dehydrator temp is... going to check it out and then install one of this PID Temperture if need it
The ingenuity made me smile. I've seen some of the consumer grade filament dryers and they are all so meh and when tested, barely get to the proper temperature for their intended job. I was eyeing a food dehydrator because they cost about as much and seeing the temperature control (from the 1950s) made me rethink that. This is a great solution!
I think a better solution would be the same PID controller on a toaster oven. This all plastic dehydrator is at the threshold temperature vs being comfortable letting it run on its own. Thanks for watching.
@@HootBuilds I didn't realize that. Thanks for sharing! I've seen some metal ones for sale. My only concern is the discrepancy between what the temp they report and the actual temp in chamber. All the reviews for the dedicated filament dryers show the temps fall short of recommended and what the units display. What's worse is their max temps are below what they advertise. I want to try printing with Nylon but I hesitate because it's expensive and I don't wanna have to toss a roll after a few prints if it's sitting for a while.
In what situations would I want to dry my filament? Are there any other options if I'm on a budget? My mom won't up my allowance.
The main reason to dry the filament is for consistency when printing. Most filament I'd hydroscopuc and absorbs moisture. This can translate to imperfections when printing. There are a few other options if your on a budget. Amazon has quite a few for $50. I think its also possible to place the filament on the bed of the printer, covering to trap the heat, and setting the bed temp at the correct drying temp can also dry the filament. My mom won't up my allowance either.
i just bought a similar dehydrator , how long does it take to dry up PLA ?
Generally, temperatures between 45-55°C (113-131°F) for 4-6 hours work well for most filaments like PLA and ABS. It's essential to monitor closely to avoid overheating or melting the filament.
Do this controllers have a timer function? 🤔
This one does not, but nether did the original temp controller. Not denying a timer wouldn't be nice, but the same could be accomplished with a smart outlet controller.
More info on the wiring and an Amazon link would be awesome (PID controllers don't have all the same pinout). Don't you have to configure your type of probe and calibrate the kp ki kd to get accurate readings? I have to do it on my 3D printer, otherwise my nozzle and print bed temps are out of wack. I doubt these cheap controllers do it automatically.
All of that information is in the kit when you order it from Amazon. I just did a search for pid temperature controller kit. My controller was already set for the correct probe, the scaling just needed to be adjusted.
What did the temperature reach when set to 35?
It's never ran that low.
Euhm im confused the heater bit blows hot air up into the clear trays not anywhere near the thermostat.
In the original config i mean
So what is the point of it?
There is a small port that blows on it that you can see at 4:45. It's still not a good representation of the drying chambers temperature.
@@HootBuilds you are right there is!
Mine didnt have that haha.
I am slowly working on a silicagel dryer device with a ptc heater that does seem to work but i dont wanna go to high temp since im 3d printing it(filament resistent up to 100c) but with 60c hot air going through the silicagel it dries in hours for small portions at least hehe.
That's the same style relay that I used in my cnc build
It works great!
Sorry to say that, but neither the Fluke Sensor nor the PID Sensor is a proper way to messure air temperature. Those sensors are for liquids. At 0:54 you taking the fluke temperature sensor in your fingers, didnt you wonder why the temperature is going down 0.2°C and is showing 17.5°C? Your fingertip temperature should be around 34°C. For the PID Sensor its the same - what sensor is it? A pt100? Those PIDs working for coffee machines or any other liquid, like for brewing beer etc. but not for those kind of stuff....
What type sensor do you suggest?
So like @hoot buids ask, what type of sensor is recommended for air temperature reading?
Can you provide a wiring diagram? You never show what you do with the AC power cables and it’s really hard to tell from the video.
those pid controllers are frequently used for BBQ's / smokers so not sure why you say its not suitable for Air temps, but as the others below asked, what do you recommend?
Cool video...the ASMR is a bit of a turn off
Good to know. I'm glad I'm not the only one turned off by asmr.
@@HootBuilds Cool build ! What's AMSR ?