Hi,
I got few of those Pan and Tilt Brackets with 2 mini servos and they are currently being auctioned on eBay. Check it here
Pan Tilt Servo Bracket robots Arduino Sparkfun Pololu
Full spec is in the ad.
These brackets are realy fenomenal for robotic projects. Use them to make your sensors scan around or mount a video camera on them.
It looks very interesting, thanks.
Those servo's look very small. Do they really move up to 1.5Kg?
GB
I got few of those Pan and Tilt Brackets with 2 mini servos and they are currently being auctioned on eBay. Check it here
Every time I see brackets like this, I get a bit excited, then I see the price, and realize just how much sheet aluminum that I could buy and use to fabricate my own (many times over).
Helps to have tools and a workshop, though - so I can see the niche they fill (that, and for when you want a more "professional" look in the end)...
gbulmer:
Lets be clear, these are metal brackets, but this is still a toy. You want be jacking up the house with them. Servos do not look very strong, but they can be easily replaced with stronger, metal geared ones.
I bought separately a pair of those Power HD HD-2216MG, for their strength and build quality. They produce 3.9 Kg.cm of torque at 6V. By the way, you won't find them at a better price, at least here in UK.
cr0sh:
Yeah, I would sell wife and kids, so I can have a workshop with all the tools. I would make even my own paper cups, if my circumstances would allow it.
Brackets are going fast. I sold two, in two hours.
DROBNJAK - Thanks for the pointers to the metal gear servo's.
We got a small CNC milling machine working for the first time yesterday, so I suspect I'll be trying to make stuff using that for a while
I'm planing on making a robot gearbox first, but something like that pan & tilt is very interesting for some of my related plans.
HTH
GB
Wow, CNC mill, I have so many projects for that. Which one did you get? Possibly Taig Mini?
No, something so old, the UK distributor has no documentation for it.
It's not mine, but a schools.
It's a CAMM-3 PNC-300
We needed a PC with a parallel port, that would run its old software.
We can't find specs and we can find tools.
At the moment, we have a 3mm end mill, and that's it 
But, good enough to cut things with holes bigger than 3mm
GB
That is a cool cat. That will do lots of work.
I discovered rescently an excelent prototyping material. Its humble polystirene. Actually all the big modern art public statues, all the silly varietey of them, are done in polystirene. They actually do big prototypes for cars in polystirene, on huge CNC machine somewhere in UK. The main advantage of polystirene is that it costs nothing. Just get some from scrapyard :).
I tried grinding it with Dremel drill and its just perfect. Produces realy smooth surfaces, which was surprise.
Try it, for the price you'll like it.
They actually do big prototypes for cars in polystirene, on huge CNC machine somewhere in UK.
I worked as a contractor for Rover Group in the 90's, and I've seen the machines they used then.
I'm out of date, but they used to use a full-size-car clay 'buck' (a frame to hold the clay, because you don't want a solid car-sized lump of clay), and do the fine shaping and detail by hand, then digitise the whole thing.
They would paint and finish the thing to show-room standards. Very funcky.
We use the blue plastic foam (can't remember its name, some people call it builders foam, which I believe is also polysterene) for CNC. Gives a nice finish.
CNC milling is lovely
GB
We needed a PC with a parallel port, that would run its old software. We can't find specs and we can find tools.
If you have a pc with an available pci slot, you can get an inexpensive parallel port card for it. The below is from the link posted, so there may be a serial port option.
INTERFACE Parallel (Centronics), Serial (RS-232C)
zoomkat, good point, thanks.
They had a couple of old PC's with parallel ports so we got it going. The software was happy on the old MS OS (Windows 98?)
(I should add, that I don't know how purchasing works in the school. Some things seem to be easy, and other things of a similar price hard.)
The bigger problem (for me) is we can't get any specs from the distributor, and they don't seem able to recommend tools for it.
I'm sure we could get it solved by an application of money,
where money > sense.
With the only tool we have found, we can make anything from soft material (up to aluminium/aluminum) as long as the holes are 3mm or bigger
GB