Apologies: running pretty rough today. Took doctor prescibed stuff
last night, waiting for it to wear off. In mean time, brain works
nice,but body/hands hurt. Typing is rough, means
grammar/syntax/spelling much lame. But had idea, want to get it  down
before I forget... and very interested in TML feedback since many
smart people here.

This is intended as a 3D printer for colony usage. Tech level is
"Today" - I don't think there's anything in this that we couldn't make
right now, it'd just be expensive and tricky.

Has 8 sets titanium poles with andozided ruler/axis markings on them.
Set of 4 1 meter long poles. First one is pointed on one end, and
hollow, intended to be driven into the ground. Others snap on, and
little screw goes in to lock together.

One pole has slots and mounting screw for 'spider nest"

Spider is 50cm dia thing w/8 legs. Each has motor on end with wheel.
Spider also has motor driven winch on top. Inside is sand hopper,
secondary hopper,  spool w/kevlar cord, spool of thin wire, and
multiple LED IR lasers. (I'm thinking an array of 1W Blueray lasers
would work, even...Could use a dozen of them all aimed at the same
point.)

Drive first pole into ground. location should be sandy soil - beach
behind windbreak dunes, desert, etc.
Attach spider nest to pole. Fill fold out cloth hopper on nest w/beach sand.
Attach solar panel to nest.

Spider drives out of nest, trailing power cord to nest.
Uses little dozer blade to level ground, using cellphone cam eyes
spaced around body to reference to first pole.
Drives to where 2nd pole should be, using lasers to sinter sand as
goes. When gets to spot, drives in little circle to make brace for
pole. When done, alerts user to drive in second pole.
Repeat for other poles.
When done, it drives back and forth between poles, scraping level and
sintering to make work platform.  Then alerts user.
Should have octagon work space about 4 meters in diameter when done.

Detach legs, snap each one to top of one of the poles. Long wire
w/bungee cord runs from detached leg back to spider body.
Get spool of kevlar cord from nest, replace wheel on leg with spool.
Unwind to Spider, snap the carbiner on end to the hasp on the top part
of  spider.

Release catch on top part of spider: little 8-sided frame w/the 8
cords comes loose. Attach winch part to the little frame, and feed
power/control wires through frame.
Now have "skyhook frame" that is attached to all 8 poles, and can be
moved anywhere over the work space by reeling/unreeling cord.
Spider main body with sand hopper, laser, cameras, winch is hanging
under skyhook, can go up and down.
When printing initial layer, puts down sand underneath 1st layer to
act as 'grease for the pan' so object doesn't sinter to the work
platform

It can also return to the nest location to change tools, get other
materials, refill sand hopper.
Programming supports doing things like feeding kevlar cord in to sand
being sintered to give extra strength, or feeding wire in for
strengthening, conducting current, making coils, etc.

Solar panel is flexible tarps. When all poles are up and machine is
fully operational, the tarps snap on to the poles to enclose the whole
work area, so wind doesn't mess things up on taller prints.

Things to print:

Up to 2 Meter by 2 meter by 10cm "Lego panels" for making shelter,
sheds, chicken coops, etc (Various sizes, shapes) including axle
parts, wheels, hinges.
---- various kinds of animal traps
---- various kinds of hydroponic gardening stuff

Parts for wheelbarrow

Parts to assemble to make copper smelter

Parts to assemble to make thing that takes copper, melts, and then
extrudes as fine wire

Spools for wire

Parts to assemble grinding machine that pulps soft plant matter, turns
in to pellets/globs that can be formed kinda like clay.

Parts to take pellets, smoosh, form and turn into thread/yarn/twine
Spools for yarn/twine
(Spider can go swap out the Kevlar spool for a yarn spool to
strengthen builds - sort of fiberglass-ish)

Insulation panels, using twine and glass. Should have edges that match Legos

Parts to assemble a small windmill - snap together "Legos" to make 4m
tall tower, has rotating part on top with eggbeater turbine and rod
that goes down to transmission on bottom that has standard PTO shaft

Parts to assemble water wheel for putting in stream/creek, ends in
standard PTO shaft

Parts to assemble low pressure steam engine, standard PTO shaft.
(Maybe Stirling engine)

Parts to assemble small generator or motor (copper wire wound into
coils inside glass rotor/armature).

Parts to make several kinds of pumps

Rainwater collection system (gutters, barrel, etc) ...gutters should
Lego connect
Plumbing things and parts to make them (sink, toilet, pipes)
Water filtration system kit (Small tower, tank on top, gravity feeds
through filtration barrel, ends in clean water barrel, has place to
attach pump)
Solar distillation device

Sundry household goods (cups, bowls, plates, forks, spoons, knives etc)
Sundry lab glassware and equipment
Semi-automatic chemical production kit... would combine water
filtration concept with various valves that triggered on temperature,
pressure or specific gravity of fluid in them. Would be designed to
make just one thing... but put ingredients in pots at top, put fire in
appropriate heating pots, and leave it alone and it'll make X. Works
for things like sulfuric acid, potassium nitrate, salts, etc.

5mm x 15mm dense glass (obsidian) very sharp cylinder darts that fit
in air rifle for hunting small game
Barrel, trigger parts for air rifle (using copper and glass). (Need
steel for piston, cylinder, resivour)

A kit that has all the "mechanical" parts for another spider printer,
printed in copper wire reinforced glass. Would need the electronic
parts from some where else.