In Asteroids: Outpost once you've mined some Resources, walk up to the Crafting Console and hold E which will bring up the Crafting menu.
Choose your Crafting category (Base parts, Suit, Weapons, and Vehicles) by clicking the appropriate tab along the top.
Select the item or upgrade you'd like to craft by clicking the Craft button at the end of the appropriate row. If you have enough Ore, it will begin creating the item (takes about 10 seconds) and then the button will change to "Place." If you don't have enough ore, go mine some and come back to try again later.