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Jelle B
Worked at Protospace.nl
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Jelle B

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Burning the midnight oil to produce this: 5mm lasercut acrylic, stacked rounded star. Lasercut5.3 is evil though!
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preliminary sort of the pallet of acrylic that got delivered today. Asked for 100kg, got 175! Stacks are clear transparent/matte, white, and coloured. Most in 3 or 5mm. This will last us at least one year I think!
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Jelle B

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Please, have a look at this vid: Vertical Video Syndrome - A PSA.
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Lovely how you just built stuff and don't let a lack of (specialist) knowledge stop you. You probably do realise that this will not be the best 3D printer you can make?  I see two major flaws with it: speed and shinkage. A heavy CNC machine will not be able to get the speeds/acceleration you need for quick 3D printing. You could try to print at 50mm/sec (pedestrian speed for 3D printing), but the heavy mechanics will require relatively low acceleration which means loss of time to get up to speed.
The other thing is shrinkage. At small object sizes shrinkage is not so bad (for PLA), but the larger your objects become, the more the internal stress will try to lift up the corners of your objects, leading to warped and/or failed prints. Especially with this large table of yours, you'd be tempted to make large objects, that will give you some challenges.
If you have not already done so: buy a good quality hot-end (prusa, E3D), and put a large nozzle (0.8, 1.0 or 7x 0.4mm) on it if you want to print larger objects. Stick with PLA unless you install a heated bed.
But most of all: keep having fun!
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Jelle B

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If you think PLA comes from 'genetically modified maize' you are sadly mistaken and utterly ignorant about genetic modification: the two are not related in any way. PLA is made from lactic acid (as the name implies) and that lactic acid is in turn derived from sugars that in turn can be hydrolysed from any starch containing stock. Saying that PLA is made from genetically modified maize has about as much truth to it as saying that you told that untruth with (some of) the last breath of a murdered man.
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Jelle B
 
+arcvideo It was a page that you dug up that boasted a lot of unfounded claims and also supported your theory/ideology. By aligning yourself with that author you make your own arguments just as bad. Sure patents and greed are bad but that is completely besides the point (you implied PLA bad because it is 'genetically modified').
As you have already acknowledged PLA does not contain any genetic material and only uses GM maize because it is the cheapest source in the US, I consider your argument completely ideological. I don't think that is a good basis for any discussion, as we will not be able to convince each other that I am right.
So go ahead, post your reply praising your own ideology (and be done with it).
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ah, ardupilot/copter has been ported to something more affordable. 200USD is quite some money for a pcb with components worth ~20$ on it, so this is a good development.
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Jelle B

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http://blog.squix.ch/2015/06/esp8266-meet-thirsdee-intelligent-plant.html
Nice application of a esp8266. Besides helping you watch your plants die, you could also ue this to help brewing your beer:
As the fermentation process progresses, you lose weight in the form of CO2. This weight loss is also gradual (like in this plant thing), when it tapers off your beer is ready. Combine this with a onewire temperature sensor (no analog) and one or two pins to a heater or TEC unit, and you got yourself a full blown fermentation controller!
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Jelle B

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Sounds like good news, but aren't you a bit premature to announce this? It will put some pressure on CAA, but also on MFNZ who will do everything to stop this exemption. You have told us before, some relations are pretty close between those two orgs.
On the other hand, if you get that exemption, I'd expect them to make to reinstate your wings too. (if they are good losers.., maybe not then).
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+Allan Gordon
sure, and he can't really undo it now anyway.
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Jelle B

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Lovely how you just built stuff and don't let a lack of (specialist) knowledge stop you. You probably do realise that this will not be the best 3D printer you can make?  I see two major flaws with it: speed and shinkage. A heavy CNC machine will not be able to get the speeds/acceleration you need for quick 3D printing. You could try to print at 50mm/sec (pedestrian speed for 3D printing), but the heavy mechanics will require relatively low acceleration which means loss of time to get up to speed. the other thing is shrinkage. At small object sizes shrinkage is not so bad (for PLA), but the larger your objects become, the more the internal stress will try to lift up the corners of your objects, leading to warped and/or failed prints. Especially with this large table of yours, you'd be tempted to make large objects, that will give you some challenges.
If you have not already done so: buy a good quality hot-end (prusa, E3D), and put a large nozzle (0.8, 1.0 or 7x 0.4mm) on it if you want to print larger objects. Stick with PLA unless you install a heated bed.
But most of all: keep having fun!
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Jelle B
 
Bugger, this comment was meant on the 3D printing vid, not this ROV stuff. Probably thick fingers on my part...
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seems a little far fetched to make precise things, but a very nice concept nonetheless. Mark your outline with a laserpointer and have it cut out following those lines.
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Have him in circles
159 people
Bui thi nguyet's profile photo
Remon vd Kamp's profile photo
PUKE BRUCE's profile photo
Hette Verhave's profile photo
3d Printing's profile photo
Felix Reitberger's profile photo
Jack Absetz (Grey)'s profile photo
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  • Protospace.nl
    fablabmanager, 2010
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