Beautiful! All the details are clearly visable, even the smallest ones like trip wire and kick tail. For other people's information: Solomon asked for a possibility to play with the design and I posted a link to one of the drawings. For who's interested, here is the link. pberg0.home.xs4all.nl/Bestanden/J-tube/6inch-Jtube.skp
My next idea is printable molds so people can cast their own cores if they want.
Imagine being able to download and print sections of molds on your home 3d printer and then assembling them and casting a core!
3d printers have become so common in the last couple years. Mine is a basic $200 Creality Ender 3 Pro. You can now order any model on Thingiverse to be printed and sent to you for a basic fee. Plastic filament for printing costs only about two cents American per gram for good quality stuff.
For comparison, this whole thing was printed with less than 150 grams of PLA. And it's actually more than 80% hollow.
Imagine how quickly one can innovate and adjust cores. And 3D models means heat flow and dynamic simulations are also possible.
All in our ongoing mission to create a more usable and smoother operating rocket mass heater.
That is fantastic! I am sure this type of mold building would offer the likes of Perter far more scope to develop the designs and add any fine detail that might increase the efficiency of the stoves!
As a DIY project it might be difficult for the average person, without specialist equipment, to cast void free casements especially with fine detail profiles, perhaps one could also offer slightly simplified molds without any fine edges.
I think the molds would be a great small business opportunity for an enterprising person to ‘sell on’ completed units to their local community.
I'm trying to avoid bringing money into it. Money ruins everything.
There really isn't any specialist equipment. One could do it with an off the shelf Chinese 3d printer, free software, build a vibrating table out of a tire, plywood, and a random electric motor.
All this stuff is already open source. Sure, if you don't want to do the work yourself, you can pay to have it done, but this isn't hard. I'm surprised it hasn't been done already.
With 3d printed molds, we don't need to compromise with square or octagonal risers or ports anymore when we want round. Edges can be perfectly beveled to reduce cracking. Ports can be precisely shaped.
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me!
Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING.
Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money?
Aug 20, 2019 18:41:48 GMT -8
mannytheseacow: michaelegan: download AutoCAD student version for free... import .SKP
Aug 23, 2019 13:33:44 GMT -8
topbaza: hi everyone, been searching all over net and this is were i need to be i think!!
Sept 28, 2019 6:16:25 GMT -8
anounaki: Hi, why I cant upload photos when I make new tread to this forum?
Feb 28, 2020 2:09:40 GMT -8
ahansen: photos under 1 mb not possible?
Jun 4, 2020 0:09:21 GMT -8
belgiangulch: Photo's are possible. They must be downloaded elsewhere and the image url (adress) is copyied.
Sept 14, 2020 7:26:15 GMT -8
belgiangulch: While creating a thread click on the small picture in the banner above the reply. A box pops up, paste the image url in the box. Pay no attention to the huge list of numbers and such.When you finish and hit reply your post with pictures will come up.
Sept 14, 2020 7:29:27 GMT -8
deadstarsstillburn: Hi there. I was directed this way by folks on the Permies.com website and am hoping I can get some information on how a total newbie can get started designing, siting, building, and not-dying-in-a-horrible-house-fire with a new RMH in a 160-year old home
Oct 21, 2020 6:52:10 GMT -8
deadstarsstillburn: The people over there recommended either a 6" batchbox or an 8" J-tube. I don't know what those are but am going to try to figure that out. What I need is a blueprint that I can scale to fit the need for my house. I have something likne 5000 square feet
Oct 21, 2020 6:53:00 GMT -8
deadstarsstillburn: but I do not need to heat all of it by any means. probably only need to heat half of that, maybe less.
Oct 21, 2020 6:53:15 GMT -8
deadstarsstillburn: moreover, the house has 3 storeys (large attic) so I assume if I get very efficient heating on the ground floor, that will go a long way toward heating the upstairs as well, no?
Oct 21, 2020 6:53:59 GMT -8
BenAlexanderT: Happy new year everybody. I wish you the best
Dec 31, 2020 15:06:14 GMT -8
Solomon: Anybody in Southern Oregon, in Jackson or Josephine counties?
Jan 16, 2021 21:54:43 GMT -8
gnomedome: i realsie this is from 2009
Apr 14, 2021 8:30:44 GMT -8
gnomedome: i realize this is from 2009 id love to see the photos from this ..as im looking to build a sauna soon similar to this .... if anyody sees this post email@example.com..... the photos in this post did not show up
Apr 14, 2021 8:32:00 GMT -8