Hello, a few days ago i bought found a printrbot simple metal for 70 usd second hand, a real steal. I absolutely love the machine, and is blown away by the print quality, specially how dense the printed parts can get.
Now i got inspired to try to build one myself using an existing design, i picked the Prusa i3 MK2. First i thought maybe getting a kit would be smart, but i convinced myself it would be a better learning experience to source the parts myself.
Small stuff really ads up, specially when i need to buy tools to work the wood for the frame, but it will be good for future projects.
Right now i think i am over 300 usd, maybe more. I want to ask if the parts i picked are good enough for this build and maybe even to be reused in the future. Or did i pick way to cheap parts? In the end i want to end up with something that prints atleast as good as my printrbot.


Forward or Reverse Direction Metal Extruder Kit With NEMA 17 Stepper Motor For RepRap Prusa i3

https://www.banggood.com/Forward-or-...p-1258653.html

TWO TREES® CNC Shield + UNO R3 Board +4x A4988 Stepper Motor Driver +4x 4401 Stepper Motor Kit for 3D Printer

https://www.banggood.com/TWO-TREES-C...p-1510212.html

Cylinder Inductive Sensors 5V NPN M8

https://www.aliexpress.com/snapshot/...Id=32865032683

AC110V/220V to DC12V 20A 250W with Fan Switching Power Supply

https://www.banggood.com/AC110V-or-2...p-1458586.html

Reprap Ramps 1.4 Kit with Mega 2560 r3 + Heatbed MK2B + 12864 LCD Controller + 5*DRV8825 + 6*Mechanical Switch with Cables for 3D Printer

https://www.banggood.com/Reprap-Ramp...p-1732890.html

0.4mm J-head Hotend Extruder Remote Kit Suppport 1.75mm PLA/ABS Filament with Cooling Fan + Fan Cove

https://www.banggood.com/0_4mm-J-hea...p-1335218.html

Obviously there is allot more, but i feel this is the key make it or break it components, but i bought the cheapest bearings, screws, rods etc.
I bought the stepper motor kit cause it was cheaper than induvidual motors, even if i will not use the drivers and aurduino uno in this project i felt it was a good deal.
The heater bed that came with the other kit, is kinda small but i thought i could use it until i really want bigger and then buy bigger. Although i am a little worried how to make it a stable build area with such a thin bed.
What i am asking is, are these components worth it, or would it be better to cancel the orders and buy better quality? I like to be economical, but i want my end result after tweaking to be a machine with very good build quality, better than if i would have bought a kit for 200usd
I am really excitied about the potentials of 3d printing, right now i am watching youtube lectures on mechanical engineering to learn to build proper machines.
I do not expect results over night, tweaking is part of learning, i just want to make sure the material i bought is worth it.
Thank you for the help