Lowyat.NET: Latest topics by OoiTY

Tastytrade referral?

OoiTY — Fri, 14 Mar 2025 10:33:44 +0800

Hey guys, I planning on opening an account with tastytrade, does anyone have a referral code they want to share with me? Would rather give the referral bonus to a fellow lyner.

Repraps and DIY 3D Printing!

Thu, 01 Jan 1970 07:30:00 +0800

Which karler?

OoiTY — Fri, 09 Mar 2012 12:51:18 +0800

Planning on buying plastic filament for the 3D printer I'm building. Now, the most important question has come about; what colour plastic should I get?

3D Printer thread

COLOURS OF THE RAINBOW

Print your dream girl..

OoiTY — Mon, 05 Mar 2012 19:30:04 +0800

[YOUTUBE]NZ0ONAZrg6M[/YOUTUBE]

Or for you bronies..

[YOUTUBE]hX-ZHNVqOgU[/YOUTUBE]

Steel rods and Aluminium Extrusions

OoiTY — Sun, 04 Mar 2012 08:35:24 +0800

Hey guys, trying to get my reprap 3D printer project moving along and I was wondering if anyone knew where I could get 8mm diameter steel rods from. I need both threaded (so nuts can go on it) and smooth rods. I'm also after Aluminium T-Slot extrusions if anyone knows where I can get those.

I tried looking at mitsumi-SG, but I'll need to register as a corporate customer, and I'm not sure how much shipping would cost.

Any tips would be welcome!

Repraps and DIY 3D Printing!

OoiTY — Fri, 02 Mar 2012 12:27:57 +0800

[YOUTUBE]http://vimeo.com/5202148[/YOUTUBE]

http://reprap.org/wiki/RepRap

RepRap is a free desktop 3D printer capable of printing plastic objects. Since many parts of RepRap are made from plastic and RepRap can print those parts, RepRap is a self-replicating machine - one that anyone can build given time and materials. It also means that - if you've got a RepRap - you can print lots of useful stuff, and you can print another RepRap for a friend...

How does the Reprap machine work?
It’s a 3D printer, that is to say a computer controlled machine that can draw a highly intricate pattern and move up a fraction of a millimeter and draw another pattern. In this case instead of dispensing ink onto the paper, it uses a plastic extruder (think hot glue gun) into a flat surface until a very detailed 3D object is created. It is a critical machine in any manufacturing factory, or research and development lab.

Here is an excellent video from the Reprap founders showing how the Mendel Reprap works, worth the watch!-(http://www.youtube.com/watch?v=FUB1WgiAFHg) What is the point? The Reprap Project (www.reprap.org) envisions that 3D printing will be found in every home in the future. And will change the way goods are made. Instead of running to the shop every time you need a little trinket for one thing or another, you could likely make it at home and for less cost. For most homes, this is still a dream but with the help of the developer community the printer is constantly undergoing an evolution and learning how to print faster more precisely and with new materials. One day the machine will be able to print 100% of all its parts.

Okay, but why?
Well, first of all, it's cool as hell. Secondly, you can print more printers for fun (and profit!). Thirdly, you can print rather beautiful models and objects, properly configured, a reprap can print stuff that gives commercial printers that cost USD$10-30k a run for their money.

For example;

More at; http://www.thingiverse.com/

Whoa, those are beautiful, but how much will it cost?
Personally, I'll put the figure at somewhere around $600-800 USD from international sources, not including shipping and the time you'll take to put it all together. If you're resourceful and/or very good at hunting for cheap parts, you can bring that figure even lower.

I've built a Reprap Prusa Mendel before, and I'll be printing out a set of parts to put together another printer when I get back to Malaysia. Anyone else interested in building one?

[addedon]March 5, 2012, 5:02 pm[/addedon]Hmm.. since noone's posting I guess I'll share the research I've done so far. I've been looking around for the places to source the materials to put together a Reprap cheaply, and easily.

Basically, a reprap is split into two parts, the Printed parts and the Vitamins.

Printed parts are parts of the printer which can be printed on another printer, while vitamins are parts which can not. Motors, electonics, steel rods, etc.

Electronics
The most common electronics for repraps are either RAMPS or Sanguinololu. Kits can be found for about 50-60USD
RAMPS is more fully featured than Sanguinololu, but it's also more expensive, because it relies on an Arduino board (Which is another ~50-60USD on top of the board's price).
The prices above are for unassembled kits, which means you'll need to do your own soldering, if you're not up to that, you can get assembled ones for a premium.

On the boards sit 4-5x stepper drivers, and arguably the best stepper drivers you can get are Pololu's. (About $15USD each and you'll need at least 4)

The motors used for repraps are called Stepper Motors, which is different from DC motors which you find in your old Tamiya cars. The common size used is NEMA 17, and sometimes for the extruder, NEMA 14 motors are used to save weight. Most stores online sell these at 25USD each, and you'll need at least 5 of them for a Prusa Mendel.

Hotend

Arguably the most important part of the printer is the Extruder. This is where the plastic filament gets fed into the printer and hot molten plastic comes out that can then be formed into your objects. There are a number of commercial hotends available and here are a few of the popular ones;

Arcol: http://shop.arcol.hu/
Budaschnozzle: http://www.lulzbot.com/en/5-hot-ends
J-Head: http://hotends.com/ and http://www.emakershop.com/Seller=784
Makergear: http://www.makergear.com/products/operators-pack
Parcan: http://www.emakershop.com/Seller=59

The extruder is one of the parts of the printer which you won't be able to get much cheaper if you tried to assemble one yourself, unless you make it in large quantities. So it's cheaper (and easier!) to just get one of the popular ones.

Hardware
Belts and pulleys connect and drive the printer's X and Y axis. If you have an old printer that doesn't work anymore, you could probably rip it apart and salvage the timing belt and pulley found inside. Otherwise, try to get either T2.5, GT2 or MXL belts with a 2mm pitch. You'll need around 2m for both X and Y axis (1m for each) and don't worry, because it doesn't have to be a continuous loop. You can buy metal pulleys online, they're nice, but plastic pulley would work fine too, and they would be cheaper.
T5 belts can still be used, but they're now outdated by the finer toothed belts.

Nuts, bolts, 608zz bearings (Common skateboard bearings). We'll need a bunch of these, which I assume can be found easily in local hardware stores..

Stainless steel threaded rods (allthread) and smooth bars (Bar stock?) are the parts which I'm having trouble finding a source for in Malaysia, and would love to know where I can get them cheap-ish-ly.

Software
It's free. Nuff said. Don't worry about this, there are some great guys developing firmware and programs which converts your 3D model into physical printed objects.

vs

I figured I'd try to build a Mendelmax, which uses Aluminium T-Slot extrusions instead of the Prusa's rods, which gives it more stability and rigidity, allowing it to go faster and give better quality prints. (Although smooth rods and threaded rods are still needed.. advice on where to get them anyone?)

It's been recommended to get the extrusions from Misumi's website, and they've recently started a Malaysian branch! (Although the web ordering is stupid; fill in an excel spreadsheet and email it back to them for a quote?!). Unless anyone knows somewhere to get Aluminum extrusions cheap, I think that's where I'll be getting most of my hardware from. EDIT - Apparently only Misumi USA is willing to sell to individuals, hence, don't bother with the Malaysian branch.

Cooling Fan

OoiTY — Fri, 30 Jul 2010 18:59:04 +0800

Hey gang,

I'm looking for a tower fan to cool myself down with. The one my parents have back home has cooling elements in it, so it works like a mini air-conditioner; it was amazing. I want to buy something else like that. Any suggestions?

Windows 7 Slipstreaming?

OoiTY — Sun, 21 Mar 2010 19:46:21 +0800

Hai guiz,

Looking back, there used to be a program for Windows XP which "slipstreamed" it's installation; letting you pop in the disk and start the installation before walking away. When you came back, the installation would have automatically completed without having you click next a dozen times at random points of the installation as well as having installed the programs which you wanted. (Eg; antivirus, media players, etc).

Now, I was wondering if there's the same thing, or if it's even possible to do the same with Windows 7. I've looked around, and it seems that 7Customizer is the only thing which "slipstreams" the installation. However, it doesn't seem to be able to automatically install other programs, which is pretty much what I'm looking for; I'm fine with reinstalling windows, however manually reinstalling 10 programs after that gets tedious if you do it for more than one computer.

Tl;dr - I'm lazy, is there something which automatically installs a bunch of programs you want during/after installation of Win7?

Multi-processor video converter?

OoiTY — Mon, 18 Jan 2010 22:06:47 +0800

Hey gang,

I'm using Total video converter to convert my videos into a format which I can use on my psp, and I was wondering if ther was any converters which take advantage of multiple processors (Quad core, dual core, etc) and/or 64 bit in order to speed up conversion.

Cheers.

Building an AMD rig, budget about 1500-2000

OoiTY — Thu, 12 Nov 2009 16:15:46 +0800

Here are a few bits which I've decided on.

X2 550 BE AM3 6MB Rm340
CoolerMaster RC-690 Rm279
Vantec ION2 Rm149 (Or any other psu within this price range)
808GB WD Hd RM215
Dvdrw Rm80

Undecided - Mobo, ram, graphics card. Which is really, the heart of the computer.

This system will be focused primarily on gaming, so I don't really need a billion core processor for rendering or getting any work done. That said, I'd love to put whatever bits I do get through some heavy overclocking, so each part would need to be up to it, hence something a little better than an ultra-budget motherboard.

Looking for: Q-Jays

OoiTY — Sat, 07 Jun 2008 18:58:27 +0800

After alot of deliberation, and probably a lot more, I've decided on Q-Jays after all its glowing reviews about its comfort and sound in contrast to its price.

So, the question now is where should I get it from? Does anyone know anyone bringing it in or any good webstores with a good price? I'm in Australia atm, though I won't mind waiting until I'm back in Malaysia to get it (Oh lawd, another half a year?). That said, I'm don't really mind waiting for shipping or if anyone is thinking of bulking it (hint hint).

Thanks in advance guys.

Hidden files and folders.

OoiTY — Sun, 22 Jul 2007 01:16:54 +0800

Hey guys, I need some help.

I've been having a problem where my hidden files are well.. hidden. Everytime I tried changing the setting in Folder Options, it reverts back to hiding the files. I've scanned my system for any viruses using Kaspersky and Nod32 (not pleasant, takes over half a day) and gotten rid of anything out of place, but I'm still stuck with this problem.

Any help will be greatly appreciated.

HDR

OoiTY — Wed, 25 Apr 2007 19:41:03 +0800

I thought about where this thread goes for a bit. In arts and design or in here. Although HDR relies on the photographs as the base material, most of the magic happens in post production, which can change a picture significantly. Oh well, if someone decides to move this thread somewhere else, no matter

Alright, First off, what is HDR?

...

You know what, I suck at explaining, I'll point you in the direction of an excellent guide.

The guide.

And I quote..

QUOTE

HDR means 'High Dynamic Range'. Using software like Photomatix you can create images with a more detail in the highlights and shadows than you can with a normal photo from todays digital cameras. Its similar to the old technique of exposure blending. Taking one photo for the sky and one for the ground, then merging them both together in Photoshop. HDR takes it a step further by increase the amount of detail in the image and allows you to create some unique photos. You can use it carefully to create natural looking photos or you can use it creatively to create atmospheric and emotive photos. The choice is yours as to how you process the end result.

To make HDR photos, you need a camera which can either shoot RAW pictures (eg; .tiff files) or take bracketed shots (eg; -2ev, 0ev, +2ev). Also, you'll need either Adobe Photoshop or Photomatix for the actual magic to happen. Personally, I prefer photomatix because the colours are alot stronger compared to photoshop. And it's alot easier.

Again, I'm lazy to explain how to do it, the guide tells you all you need to know.

That said, compared with traditional photography, it seems a little bit like cheating, but it's so damn fun.

So, some of my attempts at HDR can be found here;
http://ooity.deviantart.com/

Compilation of Bush's best speaches

OoiTY — Tue, 28 Mar 2006 06:08:25 +0800

http://www.prisonplanet.com/articles/janua...perspective.htm