next project

i am now working on crafting chess pieces for a custom set i want to make. here is the king. any comments and critiques (be it that they be constructive) would be helpful.
http://3dprintboard.com/attachment.p...tid=5534&stc=1
Attachment 5535

how did you do the reverse curve for the body ?
that looks really neat.

// create the donut shape that i am removing from the shaft
module donut()
{
rotate_extrude()
translate([41,0,0])
circle(35);
}
//shaft
// create the shaft, and remove the donut
difference()
{
// shrinkwrap (hull) a large radius base cylinder and a small radius elevated cylinder to serve as the core of the shaft
hull()
{cylinder(5,15,15);
translate([0,0,35])
cylinder(5,8,8);
}

translate([0,0,28])
donut();
}

very cool - and very neat code too.
You're way better at this than I am :-)
I really do have to start using modules.

The only slight issue I see is printing the cross. that'll need supports unless you slant the crosspieces up slightly

Nice shape.
I don't know the scale you are shooting for but make sure your diameter is over 1mm for the cross (or you print with a 0,2 nozzle ?). Otherwise, won't be easy.

I will tweak the design as needed when I get a printer. Atm I am in the design phase only. Ty for the tip tho. That is the kind of thing I need to know

i am looking at the peachy printer, but I want to wait till there are some actual user reviews first before I buy it

and aardvark, modules are nice if you want to compartmentalizations a whole shape, then translate or scale it as a whole. If you have projects that you are doing that are modifications off of each other, you may also want to look into importing shapes. Something I could have done with the queen (instead of copying the shaft code over) was create and save just the shaft, then import it as an object and use it like 'sphere()' or 'cylinder()'. Basically, it allows you to create your own library of custom shapes so u don't have to reinvent the wheel each time

i have been busy, but have finished some of the other pieces, and in doing so, have learned some techniques

note the code for the crown of the bishop. the () after the module is for you to add variables specific to that module. they can be defined when you insert the module in the code later. this allows for you to create a template and then use different dimensions or locations for each iteration. i remembered using that in java and it works here too.


Attachment 5625
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ok, im having trouble with the knight. i need to make a cone, but with the top point shifted off the center axis of the cylinder. does anyone have any suggestions on how to do this?

dead easy just use two stacked cones and move the second one.

for example:
$fn=100;
cylinder(d1=30,d2=15,h=30);
translate ([0,4,30]) cylinder(d1=15,d2=1,h=15);
Attachment 5672

You can rescale the top cylinder to give a more horsey like profile :-)

actually, i figured out how to do what i wanted. it was more like this

//base
cylinder(5,15,15);
//body
translate([0,0,5])
intersection()
{
cylinder(30,15,15);
translate([0,0,-5])
rotate([0,10,0])
cylinder(40,18,0);
}

i have had a busy few weeks, so i havent had time to get back to it, but im gonna spend some time today on it

yeah if you hull the thing I posted it looks very similiar.

So how does the unicorn move ?
Have you actually made chess interesting ?
Maybe charge across the whole width of the board spearing any pieces in it's way. A one use per game charge !

I always thought adding a couple of 8 sided dice would help.
Throw both for a square and you'd move the piece nearest that square :-)

There was an article on the radio this morning about why more women don't play chess.
Obviously because it's bloody boring :-)

it is a 3d chess set, 5 stories tall, so with the z axis, there is an extra set of movement rules, so the unicorn fills that. i think it can move laterally the same as a rook, but vertically, moves diagonally edge to edge (as opposed to the rook which moves straight up and down, like an elevator, and the bishop which moves diagonally corner to corner)

well throw in some dice and you've got a game :-)