just with a g-code design saved on the SD card

It can be printed on a cold build plate

Build Platform

Info from manufacturer:

including the popular Ender and CR series

V6 Steel - SpiderNozzle - 2.85-3.00mm (Pick a size) Nozzle Diameter:0.4mm just with a g-code designV6 Steel SpiderNozzle 1. 75mm (Pick a size) V6 Steel Nozzle Durable precision for advanced 3D printing This V6 Steel Nozzle is designed to deliver exceptional precision and durability to your 3D Printer. Made from hardened steel, this nozzle is ideal for printing with abrasive materials such as carbon fiber, fiberglass, glow in the dark filaments, and metal filled filaments. Nozzle for All Metal J Head. Compatible with Olsson Block (UM2, UM2+) Choose