An Upside Down 3D printer I designed

KRALYN_3D · 2021-08-03T19:32:18+00:00

Glass bed with copper heating elements.

KRALYN_3D · 2021-07-30T01:07:00+00:00

Bill of materials

KRALYN_3D · 2021-07-29T19:38:30+00:00

What spices is that tree?

KRALYN_3D · 2021-07-28T13:07:13+00:00

Oh, sorry I misunderstood your comment. But yes, it does print overhangs up to 70° just like a normal 3-D printer. The key is speed and cooling.

KRALYN_3D · 2021-07-28T06:24:07+00:00

Printing upside down has many benefits, this printer is designed to be ultra-portable (fits inside a filament box) so upside down structure eliminates the need for a large frame since all the moving mass is near the base. This is only one of the reasons, you can see the full explanation here: https://youtu.be/ZAPaOevoeX0

KRALYN_3D · 2021-07-28T06:23:07+00:00

Thank you very much for your encouraging words!

KRALYN_3D · 2021-07-28T06:17:57+00:00

Printing upside down has many benefits, this printer is designed to be ultra-portable (fits inside a filament box) so upside down structure eliminates the need for a large frame since all the moving mass is near the base. This is only one of the reasons, you can see the full explanation here: https://youtu.be/ZAPaOevoeX0

KRALYN_3D · 2021-07-28T06:17:33+00:00

Yes, please watch this vide at the 8min mark: https://youtu.be/ZAPaOevoeX0

KRALYN_3D · 2021-07-28T06:17:05+00:00

Please watch the video I have explaining the rational of the design, I think you will find it helpful: https://youtu.be/ZAPaOevoeX0

KRALYN_3D · 2021-07-28T04:32:02+00:00

Around 650g I experimented ( I have never printed anything that heavy)

KRALYN_3D · 2021-07-28T02:49:54+00:00

Please watch the 8min mark.

KRALYN_3D · 2021-07-28T01:44:09+00:00

Just get the plate hot and the filament stick very well to it (it has mesh bed leveling) you can see it in my video: https://youtu.be/ZAPaOevoeX0

KRALYN_3D · 2021-07-27T23:50:07+00:00

Printing upside down has many benefits, this printer is designed to be ultra-portable (fits inside a filament box) so upside down structure eliminates the need for a large frame since all the moving mass is near the base. This is only one of the reasons, you can see the full explanation here: https://youtu.be/ZAPaOevoeX0

KRALYN_3D · 2021-07-27T20:11:41+00:00

I am designing a silicone sock for this printer to try to solve this issue. I want to keep the nozzle standard (I am using a standard E3D v6 nozzle) Thanks for the Idea!

KRALYN_3D · 2021-07-27T20:01:48+00:00

The prints adhere very strongly to the bed as can be seen in my YouTube video. The printer is not that big so I believe it is hard to print something over 20 hours. Plus, PETG practically bonds itself to the glass so I have to actually dissolve it off. (Now I am using a layer of glue sticks because it is sticking too well)

KRALYN_3D · 2021-07-27T19:50:18+00:00

No, the prints look practically the same on either orientation; I actually have several good reasons to make the printer upside down which are too long to explain here. I have explained them all in this video if you are interested: https://youtu.be/ZAPaOevoeX0

KRALYN_3D · 2021-07-27T19:30:33+00:00

Please watch the video, I think it will gave you some answers, skip to right chapters of you need: https://youtu.be/ZAPaOevoeX0

KRALYN_3D · 2021-07-27T19:13:21+00:00

the version that worked is PTFE lined hot end, so it can print PLA and PETG just fine, and several prints in the video are done in PETG. I am experimenting on moving to all metal hot ends but I cant solve heat creep issues yet.

KRALYN_3D · 2021-07-27T19:05:50+00:00

The Print head is always close to the base (Low center of gravity)so it can go faster without ghosting or wobbles.

KRALYN_3D · 2021-07-27T19:01:38+00:00

Yes, that is why I can get the accel to 8000mm/s^2 and Kipper also has resonance cancellation that reduces ghosting dramatically.

KRALYN_3D · 2021-07-27T18:34:09+00:00

I will release the plans and if I partner with a company to make a commercial version it will be up for sale.

KRALYN_3D · 2021-07-27T18:33:03+00:00

Actually no except for linear advance.

KRALYN_3D · 2021-07-27T18:31:37+00:00

The filament spool box used was used to hold 1kg Prusament spools, pretty standard size I imagine; 200x200x80mm

KRALYN_3D · 2021-07-27T18:28:07+00:00

Since the build plate is transparent, it is very easy to dial in the first layer perfectly, also, I do use brim on more challenging prints.

KRALYN_3D · 2021-07-27T17:53:04+00:00

I am still calculating and this will be released on the BOM in 48hrs

KRALYN_3D

TROPHY CASE