I love the idea of this project by evalds, through the Instructables website;
Would love if someone tried it and sent me their finished greenhouse pictures!

Wooden laths (cheapest kind) – amount depending on how big you want the dome
Drill
Some-kind of pincers
Fence wire (soft)
Small clip/nail/clamp gun
Saw
Plastic film roll – about 8m x 2.5m
Some thread and anchors (bricks) for stabilization
Wide transparent tape
1-2liter Varnish & brush
Color sticky markers (for ease of construction)
Scissors / Cutting knife
For window (x times how many you want):
Thread,
Small Hinges x2
Wider wooden laths for covering gaps around border
For doors:
Small Hinges x 2
Furniture magnets 1-3
Furniture metal corners x 8 (4 for doors, 4 for frame)
Wider wooden laths for covering gaps around border
Some handle
Soil & seeds or plants
Total costs for me were about: 80 EUR = ~ 105 USD
Greenhouse has been standing well since beginning of the summer
Step 1: Cutting wooden laths

For calculations I recommend to use this site (I built 5/8 size):
http://www.desertdomes.com/dome3calc.html
High precision is not necessary (+/- 5mm)

A elements 0.522m x 30
B elements 0.605m x 90
C elements 0.618m x 120
You can tweak these numbers in order to get the most out of wooden laths that in my case came in about 2m length.
I advise you to write letter A, B, C with pencil on each stick and tie them together by groups.

I advise sawing trough 4 or more laths at once. Sawing took for me about 3 hours of work.
Step 2: Drilling wholes in both sides of sticks


I advise to drill trough 3 or more sticks at once to make process faster. In my case it took about 2 hours of work
Step 3:
Next using diagram & fence wire start tithing sticks together.


Hexagons – with 6 C sticks
Pentagons – with 5 A sticks
All shared borders are B sticks
Start building it upside-down with Pentagon in the middle.


I advise you to use color sticky markers in order to keep track of shapes. Assembly of dome itself for me took about 3 hours.
Step 4: Making doors

If the structure collapses its OK, because you would be able to straighten it out when it is standing.




Strengthen frame using metal corners on the corners of frame. It will also make sure it do not deform.
Measure and create construction of doors (straighten them in corners with metal corners)
Keep in mind space for hinges and wider lathes around frame of doors (and places for magnets)


Measure and create window as triangle inside other chosen triangle. I strongly advice to have 2 or more windows because this dome-type greenhouse is very humid when it is finished.
You can see my window frame in one of the images below (in corner), but you can improvise your own version. I used thread to tie a handle for it (for use to hold it in open position when it is finished)




After construction varnish everything as well as you can (I advise at least 2 times with a time span in between to dry it), otherwise wood will rot very soon. Let everything dry for couple of hours day.
Make sure it will not be windy day, because wind could blow whole project away like a sail.
Secure plastic film roll using clamp/nail/clamp gun (I do not know exact name of it in english – look in photo)



Don’t worry if there are some holes not covered. You can add cut-off pieces later at the end.
Step 7: Construct outer frames of windows






Step 8: Prep location




Step 9: Planting
– radishes
– salads
– peppermints & other kind of spices
– tomatoes
– paprika


- the geodesic dome (samsonjohnson.wordpress.com)
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