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Messages - Chris.Botha

21
Hey all, VERY long time no see.. just slapped a 5th axis onto my mill so I think you might see me around somewhat for a bit.. softlimits are suddenly a very interesting topic to me!

How to stop stuff slamming into other stuff!!

https://www.youtube.com/watch?feature=player_embedded&v=C0Iy70aqOHA


23
kinect scan. its  a picture on top of a depthfield of the bear, i think? anyway, vid is small, but the bear is actually not bad..

it gets you to place the bear (any toy) close to the camera and then hold it still while it (scans infrared/passive depthfield)?

turn bear around line up the edge then scans the back.. the output model is lowpoly, bit lumpy but not bad.. this particular incantation of the program sticks googly eyes on it then maps the bear movements to your body movements, bit silly but i do see application of the technology in the future.

http://www.youtube.com/watch?v=KAdSi7WnWJ4








24
@Rich, i did look at laser scanning, not high enough resolution, plus i work with jewellery, reflection is always an issue and the steep wall inclines tended to "stripe" I only ever used david laser scanner tho, not sure if a dedicated system would pay itself off..

@br549, i would like to able to do both actually...

@tweakie.. i have kinect and wii and love both.. but the res is a little low.. at the risk of being politically incorrect, this is what i love my wii for the most..

http://www.youtube.com/watch?v=JDPbonFZECI

my wife just shakes her head...


25
K thanks all...  got the bank onto it.. sometimes she lets me buy toys :)

(i woudl have to grind that probe point down a bit tho.. and reason not to, will damage summing inside it.. bear in mind, by grind im referring to refined jewellers diamond discs.. not an actual grinder.


Thanks Tramalot :)

27
:)

i want to spend 50 dollars and have it scan at 0.01mm in 5 minutes ;)

realistically speaking.. I dont scan that often and usually its only a small area, not much bigger than the coin above (im a jeweller, thing ring size) so i do need high detail, 0.05 or better would be nice. My last scanner (mdx-15 piezo) would scan an onject that size at a xy pitch of 0.1mm in about 4 hours. 0.05 in 8 hours. this is not an issue, my lovely wife would put it in the mornign and by time i get home its odne..

BUT

that was on a seperate machine, the mill is primarily used to also produce my waxes.. so i cant have it offline for 8 hours.. a faster solution required..

any input welcomed :)





28
Hey duders..

been a while.. i finally sold my lame-ass mdx-15.. then typically just after i sold it I started to need touch probing..   >:( :o

Someone posted a probe video on 3dcadjewelry

http://www.youtube.com/watch?v=kAHTxzzz91A

which looks like it could do the job? It is running on mach, so will this have the resolution i need? 0.1mm (thats 0.004th for you yankeedoodles stuck in the 18th century..

i would double that at 0.05mm (0.002) but i will settle at 0.1

anyone have info on this? What probe is it, is it good enough, is there better (but still affordable)

(i did try search but info is sporadic and broken up, maybe i was using my "man eyes" as my wife says, if a cohesive thread on this exists, my apologies)

my googling turned up this.. interesting looking project..

http://www.muellerr.ch/engineering/scanner/default.htm




he is achieving 0.15mm but so slow I would die of old age before an average scan was done...


regards
Chris







29
Sorry not been posting too much guys.. Try to pop summign in here now and then.. the previous post will be followed up on my blog when the next stage is ready :)

http://digital-jeweller.blogspot.com/2011/05/cross.html

30
The Cross :)

The brief was to make an ornate cross, 90mm high by 65mm wide with scrolly work in it..

I drew the base with Rhino to get us as far as a weight estimate then filled it in with tsplines for the curly wurly stuff :)

The Tsplines base geometry


A close up of the geometry layout


and the render.


Deskproto(64bit) made childs play of the 116mb mesh file...


then off to the mill.. roughing.. big ol block of wax :)


and after the rough out on three sides the final pass with a fine cutter


and finally the first cut is done, the two short arms..





here is a quick clip to keep you interested untill the next post :)


[video]http://www.youtube.com/watch?v=UY9RSIjCvJs[/video]