I JSUT FIGURED THIS OUT AFTER 191 HOURS. WHEN SWIMMING, PRESS ‘C’ TO SWIM DOWNWARDS.
its much faster than slowly floating downwards
9 Likes
Also works as crouch, to keep you from falling off a ledge. 
5 Likes
Stuck in a hole with no tools? Stuck on lava level and your last grappling hook just broke, stuck inside someone else’s build through locked doors?
Just return to Sanctum and select the open portal - it will give you the option to “bump” the portal to another location close by. This can also be used to return to the surface from a mining expedition if you dig yourself into a hole it’s likely to jump you up to the surface.
7 Likes
To expand on what Annie wrote, you can also use the portal on the right in Sanctum to port directly to any destination you’ve previously saved. There is a catch though, it will cost you 100 coins minimum, and an additional 100 per hop, so if the planet you want to port to is three hops away, it’ll cost you 400 coins.
It’s for this reason I recommend saving the location of each portal hub on each planet. That way, if you’re miles underground and want to go home, you can port to Sanctum, then straight to the hub on that planet for an affordable 100 coins.
Don’t forget to donate some Oort Stones to one of the blue Buying plinths nearby most portal hubs; the owner of those portals needs them to keep 'em open.
8 Likes
Great Tips so far 
Another not so useful tip, don’t try to make friends with lava. Lava needs no friends. He only needs you to die.
- Use “c” (crouch) to reach close to roadrunners. Use a grappling hook and a slingshot to kill it.
- Use multiple machines and spark cores to accelerate crafting when you have multiple recipes to do and/or want to generate more spark in less time.
- Mass crafting saves resources.
7 Likes
Since @Okkelinor seems too shy to post it here, here’s his useful map of the available planets.
8 Likes
to add on that, rotating clockwise to increase and counterclockwise to decrease is more precise than draging up & down or left & right
2 Likes
Spark cores can be stacked/connected and accessed from one GUI… each core adds a fuel slot to the GUI… this allows for faster generation of spark. only one core in the chain needs to be connected your machines to connect all of them. =)
10 Likes
The Chisel can rotate crafting tables and machines.
The shovel is the default tool, and brakes decorative blocks and machines faster and more efficiently than other tools. However, due to a bug, all tools of a given material (copper iron silver gold ect.) are equally effective on all blocks for the time being.
6 Likes
Buying and selling plinths charge a 10% tax.
Selling plinths (the red ones) the buyer pays the tax. The seller cannot see the tax. So the price is always 10% higher than what the seller set.
Buying plinths (the blue ones) the seller pays the tax. This is not communicated however the sellar will notice that their total is 10% less than it should be.
Rounding rules do not apply, so the tax can be avoided if the prices are under 10 coins
7 Likes