19:35 <joseph_> teepee InPhase: I've gotten some shaders working in the F6 render. Here is the branch I've made these commits on: https://github.com/jbinvnt/openscad/commits/trace-shader-info. Note that HEAD~1 is using the RGBCheckerboard shader, which produces glitchy faces when rendering an un-rotated cube. At first I thought this was a z-fighting problem that I would need to fix, but it seems to just be a bug with the shader itself. I haven't

19:35 <joseph_> seen the issue when switching to another shader. Also I could not figure out how to render CGAL_Nef_Polyhedrons. My solution was to convert the polyhedrons to polysets. This approach seems to work well so far in my testing. I don't know the history of rendering polyhedrons vs polysets

19:55 <teepee> joseph_: that's good news. I was a bit worried about progress and the difficulties to catch a good time for discussions. but that sounds like a break through code wise :)

19:56 <teepee> also there just came up the question regarding the project timeline, as far as I understand it would be a possibility to amend the default (12 weeks) to something up to 22 weeks

19:56 <teepee> if you think that would make sense, we could have a closer look at that too

19:58 <teepee> totally unrelated, I wonder if that's going to print https://imgur.com/kK5Zouv :)

19:59 <teepee> well, and actually work too

19:59 <Friithian> a well tuned printer shouldn't have too much issue

20:00 <teepee> I'd call mine "reasonably" tuned

20:04 <J1A847665> http://bitly.ws/sRCa   Vase  code on ochafik

20:05 <J1A847665> teepee maybe turn the top part upside down

20:06 <J1A847665> but looks it could print without supports

20:06 <teepee> yeah, I thought about that

20:06 <teepee> but I think I don't care too much about the overhang inside, more about the outside looking good

20:07 <J1A847665> to of the slits will have a little  sagging

20:07 <J1A847665> top of the slits

20:07 <InPhase> teepee: Yeah, that looks very printable.

20:07 <teepee> hmm, I could switch to teardrop if needed :)

20:08 <teepee> but then they are not going to be visible anyway I think

20:08 <InPhase> teepee: Your biggest issue is going to be the sagging 20cm bridge, but the stringing from that will be hidden inside.

20:08 <InPhase> teepee: You could fix that by angling more.

20:10 <J1A847665> 20cm ?

20:10 <teepee> top inside

20:10 <J1A847665> 2cm

20:10 <J1A847665> 20mm

20:10 <teepee> oh, yes

20:10 <InPhase> teepee: But... What is it? My first thought was some sort of sprinkler system adapter, but there are far too many round 45-degree overhangs. :)

20:10 <teepee> I hope so, otherwise it would not really fit on the printer :D

20:11 <J1A847665> a lantern

20:11 <teepee> housing for a zigbee weather sensor

20:11 <joseph_> teepee: We can discuss possibly extending the timeline. I'm about to be traveling but I'll be back online again in about 6hrs.

20:11 <teepee> considering how small that sensor is, I may need to check if I did the usual use diameter as radius

20:11 <J1A847665> wether station would be my next bet

20:11 <InPhase> That makes more sense. But why the two overhangs?

20:12 <InPhase> Just being extra careful about guarding the threads?

20:12 <teepee> joseph_: I think we have a day or two for that, if there's general interest, I can see if I can reach Sean for some more details meanwhile

20:12 <J1A847665> rain shield

20:13 <teepee> InPhase: two?

20:13 <J1A847665> hm indeed  the second need to be under the slits

20:13 <InPhase> teepee: Well I see three pieces, and two of them have overhangs.

20:13 <InPhase> But there are no holes to guard for the top one.

20:14 <teepee> there's a big bridge at the top part, but what other one?

20:14 <J1A847665> sure looks nicer with 2 or 3  . .. but there should be a guard from below too

20:15 <InPhase> joseph_: So is that commit branch in a good state for testing?

20:15 <teepee> I think I don't get what guard means in this context

20:16 <InPhase> joseph_: I had wanted to do some tests and code reviewing early in the project, but we're getting pretty far in and haven't gotten to this yet.

20:16 <J1A847665> the tapered  cone

20:16 <InPhase> Yes, the cones.

20:16 <J1A847665> i think the top one need some slits too so hot air can circulate

20:17 <teepee> hmm, if there's direct sun, the value will be pretty useless anyway

20:18 <teepee> but I guess it's possible to fit some holes there too

20:20 <J1A847665> the commercial ones have more but smaller cones https://ae01.alicdn.com/kf/HTB1VukGaHsTMeJjSsziq6AdwXXar/Temperature-and-humidity-protective-cover-weather-stations-agricultural-greenhouses-dedicated-radiation-enclosures.jpg

20:21 <InPhase> J1A847665: And yes... I missed your 20cm question about my 20cm typo. :) 20mm.

20:21 <J1A847665> InPhase  just confused me  Ü

20:22 <J1A847665> deflector is a nice name for these rings .. sounds spacy

20:22 <InPhase> I didn't even parse what you were asking as my brain disconnected from my typing. ;)

20:23 <InPhase> teepee: And I suppose sunlight guarding is a good reason for two deflectors, where the input holes only exist at the bottom one. That works like the JWST shield, and is sensible.

20:25 <J1A847665> yeah but the inner chamber needs an insulator too  .. so the top deflector would sit  on top of the chamber with just a tiny column

20:25 <InPhase> You could in theory even go a little further with that on the top, with a spacer chamber. But this is probably overengineering it.

20:30 <J1A847665> francis kere  used these shadow roofs in his buildings in africa to cool schools without power

20:30 <J1A847665> https://images.adsttc.com/media/images/59b2/40f9/b22e/3848/cc00/0322/large_jpg/4__Erik-Jan_Ouwerkerk_.jpg?1504854258

20:41 <teepee> neat solution

20:42 <teepee> would be interesting to hear why it's angled that way

20:53 <J1A847665> so hot air will flow and pull fresh air through

20:56 <teepee> ah, I see, automatic circulation even if there's no wind

21:16 <J1A847665> yes, some buildings even have this around the walls   https://www.kerearchitecture.com/   (studied in germany)

21:19 <J1A847665> https://www.kerearchitecture.com/work/building/lycee-schorge   with some explainations

23:36 <linext_> J1A847665, good designs and a good website

23:43 <InPhase> J1A847665: That's an inspirational roof structure... One of the best roof materials for longevity is metal, but it's quite noisy in the rain. But if you had a raised slanted solar panel platform on top of a metal roof, you'd block out the rain noise and block out the bulk of the summer heat.