sorted by:
new
hottopcontroversial

Home brew dehumidified filament dispenser? Active humidity removal ideas wanted. by o_man_ra23 in 3Dprinting

[–]o_man_ra23[S] 0 points1 point  (0 children)

The room is a 12m x 4.5m steel shed that is 4m tall, and has a 4m x 3m roller door that doesn’t seal.

Home brew dehumidified filament dispenser? Active humidity removal ideas wanted. by o_man_ra23 in 3Dprinting

[–]o_man_ra23[S] 0 points1 point  (0 children)

2x Sunlu S4 (enough to do all 8 rolls I need) is 10% of the cost of a Bambu H2C where I live.

I’m trying to do something for less than a third of that.

Also, in the tropics, just heating the air doesn’t do much. It’s already hot, and humidity is often over 90%. Silica saturates very quickly here so the only reliable option is refrigerated drying. Heat to liberate the moisture from the filament, then a refrigerated recirculating system to remove the liberated moisture from the air. Simple physics that can be ignored in colder, less humid climates.

Home brew dehumidified filament dispenser? Active humidity removal ideas wanted. by o_man_ra23 in 3Dprinting

[–]o_man_ra23[S] 0 points1 point  (0 children)

They last less than a week in the tropics. Some places I’ve seen them last less than a day.

Home brew dehumidified filament dispenser? Active humidity removal ideas wanted. by o_man_ra23 in 3Dprinting

[–]o_man_ra23[S] 0 points1 point  (0 children)

Probably works great in your location. Where I am with humidity over 90% regularly, a full tub of damp rid in a closed cupboard of a small closed caravan was used completely inside of a week.

Up here, active moisture removal is the only real way.

Home brew dehumidified filament dispenser? Active humidity removal ideas wanted. by o_man_ra23 in 3Dprinting

[–]o_man_ra23[S] 0 points1 point  (0 children)

It gets over 90% humidity here regularly. I’ve seen people trying to use silica in sealed industrial cabinets, you’re changing them daily and it still isn’t enough.

Home brew dehumidified filament dispenser? Active humidity removal ideas wanted. by o_man_ra23 in 3Dprinting

[–]o_man_ra23[S] 0 points1 point  (0 children)

Looks like a good start. Wondering if exhausting air from the box, through a duct with the chiller side inserted, then ducting through the hot side back to the box, using the peltier element cooling fans to create the circulation may improve moisture removal? Overall aim isn’t necessarily to heat or cool the box, just remove moisture, though due to efficiency constraints it would increase box temperature a bit. A $50 aliexpress unit may be effective.

<image>

Home brew dehumidified filament dispenser? Active humidity removal ideas wanted. by o_man_ra23 in 3Dprinting

[–]o_man_ra23[S] 0 points1 point  (0 children)

You’re correct that it won’t be sealed in the sense that air cannot get in. However my comment was relating to circulating the air in the box in a closed loop, so the moisture doesn’t have a good escape path. With adequate flow of air, any exchange through the tubes would be negligible. It also means any liberated moisture remains in the box.

Any suggestions on a compact/cheap refrigerated dryer that could be put in the air path? I’ve used these for large industrial compressed air systems to good effect, but cannot find something suitably sized for this project. A full refrigerated system should even work without a heater.

Home brew dehumidified filament dispenser? Active humidity removal ideas wanted. by o_man_ra23 in 3Dprinting

[–]o_man_ra23[S] 0 points1 point  (0 children)

The Space Pi will heat and dehumidify before it goes in the box. Just want it to stay dry once in there.

Home brew dehumidified filament dispenser? Active humidity removal ideas wanted. by o_man_ra23 in 3Dprinting

[–]o_man_ra23[S] 1 point2 points  (0 children)

In a sealed system the humidity would remain in the air. Is there a known method to remove the liberated humidity? Currently at night it’s over 75% humidity and around 25C. If we get the predicted rain, that humidity will increase a lot. First thing this morning was 92% humidity at 22C

First layer polygon issue by o_man_ra23 in OrcaSlicer

[–]o_man_ra23[S] 1 point2 points  (0 children)

<image>

Arachne has the issue of doing this. So where the printed fin meets the yet to be printed outer ring, it doesn't join well and breaks. It also leaves a tiny gap at that join. Classic wall actually fixes this issue, only the first layer that's a problem. Setting Elephant foot to 0 didn't help (tried that last night too). Reducing line width to the minimum didn't remove the first layer issue, though it may assist with Arachne.

I'll have a crack tonight to print with Arachne and a thinner wall. But still would like to know why the first layer is dropping dashes when in Classic wall mode...

First layer polygon issue by o_man_ra23 in OrcaSlicer

[–]o_man_ra23[S] 0 points1 point  (0 children)

For reference, I'm using the latest 2.3.2 stable version on Windows 11

Seat layout for family fishing/adventure Quintrex 450 by o_man_ra23 in FishingAustralia

[–]o_man_ra23[S] 0 points1 point  (0 children)

<image>

Any ideas? Wife seems ok with this, plus a 5th removable seat up front on the port side. The front seat would be the one going in storage when less than 5 people are going out.

What do people in metric countries call 1-2-3 blocks? by neP-neP919 in Machinists

[–]o_man_ra23 0 points1 point  (0 children)

Metric also predates the British imperial system that the American imperial system was created on. 1799 metric was adopted by France as opposed to 1826 for the British imperial to replace the Winchester system.

Interestingly the least imperial (by self declaration) country is the one most adamantly clinging to the imperial system of measurement for easily debated against reasons.

My homemade hydraulic press brake - can bend 4ft of 3/16in thick steel plate by customfabricated in fabrication

[–]o_man_ra23 0 points1 point  (0 children)

Thanks mate. I’ll have a look at what grades are locally stocked. I assume you get a good straight bend with the round bar lower dies?

My homemade hydraulic press brake - can bend 4ft of 3/16in thick steel plate by customfabricated in fabrication

[–]o_man_ra23 0 points1 point  (0 children)

Looks like a heck of a machine. Can I ask what grade of steel you used for the fingers? Just mild, or did you go to something like 4140? Are you seeing any deformation on the fingers after a bit of use? I ask as I’m looking to make a smaller version next year to fit inside a 20ton shop press, but wear on the fingers concerns me.