Showing posts with label Berlin. Show all posts
Showing posts with label Berlin. Show all posts

Tuesday, 8 March 2016

3D Printing and finishing the Nefertiti sculpture

Back in late 2015, two artists allegedly 3D scanned the famous 3300 year old bust of Nefertiti. Secretly and without approval inside the Neues Museum in Berlin - or so the story goes.

The artists liberating this model and also delivering a wonderful replica back to Egypt are Nora Al-Badri and Jan Nikolai Nelles. 


Depending on what you read, who you ask and detailed examination of the 3D Model, you can probably make your own mind up about how this was 'created'.

Fabbaloo have a good version of the story here

You can see the very questionable PR stunt video over on Vimeo, shows the team hiding a low resolution scanner. Probably just to go with the story in the hope that news feeds pick it up. In reality someone probably spent a lot of time painstakingly reconstructing this model, or maybe it's the original high-resolution scan somehow obtained from the museum? One thing that's very nice is the fact the team have released the model into the world for people to enjoy and 3D Print if they so desire.

Lots of good details about the model, history and the story here too - by Suleyman Sonmez

This story is likely to be shrouded in a little mystery and speculation for some time, and maybe that's the entire point. The 'fear' that objects and artworks can be quickly 3D scanned like this will generate discussion and reactions. Regardless of the reality in actually doing this sort of thing, capturing a high resolution and accurate 3D model is not at all easy.

This post is not going deeper into the debate about museums, historical artifacts and tensions between countries that hold precious and cultural objects of desire.

I'm also not going to further speculate on how the model was actually made/scanned or obtained. Maybe another day on all those issues...

The great Fredini continues the discussion and speculation on his post here, if you do want to dig deeper into this.

Even more here (Nefertiti scan heist is a Hoax) from @CosmoWenman

This post is simply about printing a great and beautiful 3D Model with standard desktop 3D printing technology, and some simple finishing tips you can use or adapt to your own requirements.




For this 3D Print I used the following -
  • Standard E3D BigBox Pro 3D Printer. (build size 200 x 300 x 280mm)
  • Fitted with an E3D V6 Volcano nozzle (1.0mm nozzle size) - yes, that's quite big.
  • Colorfabb XT Co-polyester material and also Colorfabb nGen Co-Polyester (to compare both).
  • BigBox Pro heated build surface with my 'glass screen-protector surface' fitted.
  • Netfabb free version to cut up the model into sections to print (full sized).
  • Simplify3D to slice and process the model.
  • Standard grey builders plaster (low cost 10kg bag from DIY store) - You could use plaster of Paris or sand and resin - do not use cement / concrete or fast acting fillers - they generate lots of heat and can also contaminate the model and leach-out salts and minerals onto the surface of the model.
  • Superglue + activator to fill minor holes and joint the sections together - co-polyester and PET/G/T materials like cyanoacrylate (super-glue) - just be careful using it.
  • Sandpaper 240 grade and 600 grade.
  • Zinc based undercoat spray paint - (68% zinc content) low cost car grade 800ml can.
  • The zinc paint can be anything really, I like the finish you get with zinc, it can be polished and is good for highlighting features.
  • Optionally use a polyurethane spray top coat to seal everything after polishing.
    • I like to use Plasti-Kote 591 clear polyurethane gloss varnish. You can also get the 592 satin type - both in a 400ml spray can.

I explain the process and more about the print and finishing in the video below -


You can also watch it in HD on YouTube here -

I briefly contemplated just printing the model smaller, but after looking at the mesh and all the fantastic features, I had to print out a full size version.


 I used Netfabb to cut the model up into sections that could be printed easily, without the use of any support materials and with low levels of infill or hollow if desired.


Simplify3D was used to slice the model ready for printing.


Both sections of the headdress were printed at 0% infill and in spiral-vase mode using Colorfabb XT clear co-polyester filament.


The stunning face section is orientated so all the features can be printed without support. It does however require some level in infill, I used just a 6% rectilinear density to provide enough internal support, this worked perfectly and used minimum material.



The shoulder and neck section was also printed with 6% internal rectilinear infill, in light grey Colorfabb nGen filament.



The two top headdress sections glued and filled with plaster.


The only sections I have lightly sanded and polished are the face and neck, these are intended to be smooth on the original model and have very few areas of actual damage on the scan. The headdress has just been glued and spray painted, not a single thing was done to it to allow all the fine levels of detail to show. Looking closely you can make out the individual paintwork brush marks and texture of the original.

Glued and then a first coat of Zinc spray paint - all before any sanding was done to the face and neck.

Cutting up models into sections can really help on a desktop 3D printer, not only does it allow bigger final parts to be made, but also re-orientation so you may not need to use support material. I hope you try it out, and make some nice big things to display and enjoy.


Lightly sanded, than a second coat of primer paint - and a final polish.


It's now quite the talking point, after all it's not every day you discover a replica of a 3300 year old Egyptian artifact in someone's kitchen.

And if you are hunting more artifacts, the British Museum do share some of their 3D Models, unfortunately they are of a very low detail - maybe we can convince them to release some higher resolution models... but I doubt it.

The original complete model was shared here under a Public Domain license 

My cut up sections can be found on my Youmagine page here, also under a Public Domain license.

10-3-2016 - Update - And if you really want more on this story, take a look at this post here   -by Christian Lölkes 

Thanks for reading. Please leave a comment, subscribe to me on Youtube and if you want to get in contact -

Twitter - @Richrap3d
Google+ - RichardHorne_RichRap3D

Until next time, happy printing.

Rich.


Tuesday, 31 March 2015

Development update & meeting people at Madrid+Berlin 3D Printshows

It's been longer than I wanted for an update, I will try to get more frequently posting.

Roger Eueda - BCN3D Technologies at the Madrid 3D Printshow
2015 has been a busy start to the 3D Printing year. More shows, machines and materials releases dominate almost every single week of the calendar.

I recently visited the Madrid and Berlin 3D Printshows. These shows are now attracting a lot of different exhibitors and also a very wide variety of user interested in learning more about 3D printing and it's uses.

The questions from people or all ages and backgrounds are fascinating, we are definitely moving forwards with understanding of 3D print technology and it's current capabilities. The biggest observation I can make is that the low-end desktop market is being left behind and the gap between professional machines and services is getting ever wider.

When you look at the ever increasing applications of 3D printing that are being exploited many are beyond the capabilities of desktop machines. 3D Selfi's and mini-me prints are being produced in full colour sandstone or with Mcor based Iris paper printers. People expect this, not a single colour plastic model with low detail.

Mass customisation is quickly being taken seriously by big businesses, and the use of 3D printing is a channel to unique gifts and value added services beyond the mass market one-size fits all.

I do think we are reaching a saturation point with desktop 3D printers. And while new technologies like Carbon3D offer slightly different directions and speed enhancements, the lack of full colour and materials other than thermoplastic's is going to continue to hold us back.

Extremely low cost machines keep on appearing, and disappearing... time will tell if these constant attempts to 'break the mass market' do more harm than good. I'm not so sure, the eco-system is still not quite ready I fear.

Development Update - 

(Sorry for the total lack of images below - I'm just trying to get this long overdue update published before April 1st so you don't think it's a Joke!) - It's not!

My own 3D printing developments over the last 3 months have been interesting, I have plenty to share with you. I'll post more about these projects as soon as I can - 

Paste Extruder V4 - Large capacity and both heated and cold paste material printing. Exciting stuff.

The resurrection of a filament manufacturing machine (filament extruder) - An unhappy (almost dead) and under-powered Extruderbot was very kindly donated by the Fantastic 3D Filaprint team, it was fun to re-engineer and re-build and allows me now to experiment with composite materials, blends and some more unusual ideas.

An exploration in Resin 3D printing - I have made a number of experiments and designs for a RepRap Resin printer called 3DRip - lots more on this, it's still in development so I plan to post all the success and failures too of getting it running. Lots of new directions to take this too, faster and higher quality printing.

Experiments with Wax printing - Just started this one. I'm looking for anyone that's interested in wax as a 3D printing material. It's amazing stuff and I think we can do a lot more with it - let me know if you want to collaborate.

Lots of materials - New materials continue to pour onto the market. I'm testing as many as I can.

Part 2 of 3D Printing bed materials - I have some new materials to try out and I finally bought a sheet of BuildTak material at the Berlin show. I have heard good things to looking forward to testing it out.

I also finally met with other members of the 3D printing community who I have wanted to meet for such a long time. (Lots more people I didn't get a picture with, I will be more organised next time).


Florian Horsch (HypeCask) and Kay Parthy (of Lay filaments ) 
Nils Hitze (All3DP) and  Sabastian Karpp (Yeggi 3D)

Richard Curtis - Adobe - Presenting the 3D Printing capabilities of Photoshop CC - It's mighty impressive too.

Finally met with the BQ Team in Madrid - Juan Gonzalez and Alberto Valero
The shows were very good, and definitely the best way to meet people and discuss ideas.

I will post more about the shows, machines and people I met, but for now this gives you a taste of what's to come this year. Hopefully I'll meet more of the community and get to discuss 3D printing development over a beer or two. 

I'm also planning to be back in Barcelona real soon to meet many more of you :) - More on that shortly.

Berlin - And all ready to go Rachel Park, Kerry Hogarth & me - Photo by Claire Russell-Jones
It's not all just fun :) Lots of background work goes into making these events packed with high quality installations, talks and products on show.

Thomas Sanladerer caught up with me at the Berlin 3D Printshow for a discussion on current technology and what's new. That question actually totally stumped me, and I was surprised how hard it was to point out actual new innovation or development going on in the desktop market.

So much that it made me really ponder where we would be in the next 5 years. More on that in a future post.




Here is Tom's video - and before you ask - I was thinking 'Ultimaker' & 'Printrbot' and it came out as Makerbot ! I'm sorry... Catch Tom's Youtube channel here for lots more 3DPrinting videos.

Meanwhile in the USA - 

The Midwest RepRap Festival (MRRF 2015) was going on over in the US (Goshen, IN) organised by SeeMeCNC, and sponsored by many great other companies and communities. I'm really disappointed to have missed out on going over, but the timing and time off work just was not on my side this year.

This video from E3D is a great intro to the amazing and complex task of making a production extruder hot-end (that actually work well). The guys at E3D are world leaders in this area and actually do research, testing and devote both their awake time and dreams to making the worlds best hot-ends.

John Olafson has shared a lot more of the great video's over on his Youtube channel here

Disruptive Magazine - 

I'm also writing articles for the newly launched Disruptive magazine, you can download and read the very first issue here. - Let me me know what you think, good and bad. The main aim is to cut out the hype and talk about both 3D printing and it's uses in a calm and sensible way.

So you won't find any "Worlds first/smallest/fastest 3D Printed (insert anything)" headlines in the magazine or on the disruptive website - we all have enough of that already. 

And a quick shout out to one rather fantastic new 3D printing company was at the Berlin 3D Printshow. Showing what can only be described as a 1960's 'Hotrod Fridge' with a 3D Printer inside.


This was Aye Aye labs - From Poland. A new startup with design flair and inspiration from classic Hotrods and American diners of the 50's and 60's.

I'm sure Aye Aye labs are going to find their market and do very well in the coming months.

I'll be at the London 3D Printshow if you want to say hello or discuss 3D Printing, look out for the Disruptive Knowledge bar and Makerspaces.

Another update soon.

Rich.