Step 1: The UP!
Step 2: First Failures
Here are some mistares you might have done.
Step 3: Problem 1 : Nozzle Too High
Step 4: Problem 2 : Surface Not Hot Enough
Step 5: Problem 3 : the Surface
PC Board : It will make your table higher (witch makes it easier to adjust the nozzle) and conduct the heat. I had problems with this one since I couldn't fix it perfectly to the table and it ended up curving because of the heat.
Green sticky paint : This substance actually comes with the printer. You have to apply a tin layer of this paint on the table and let it dry before to start printing. I found this method very ennoying because you'll have to repaint the surface often and it takes hours to dry. It also leaves a green mark on the part.
The MAGIC SUPER AWESOME blue painter tape : This one works perfectly. It might cost more than the two other solutions, but you can't miss with this one. You'll have to replace the tape once in a while, but it's worth it.
A new trick given to me by Lamedust is Kapton tape!
A little bit difficult to find but heat resistant and gives a shiny face.
Step 6: Problem 4 : Alcohol
Step 7: Problem 5 : Screws
Step 8: Problem 6 : Accidents
Step 9: Problem 7 : Empty Spool
Step 10: Problem 8 : Support
Step 11: All Star Solution : Temperature BOX 1 Pound Spool.
you will have to laser cut these six parts on 4.75mm thick acrylic sheets (or whatever works for you). I suggest you keep the top and the door clear so you can see inside at all time.
Then assemble and glue them. You can leave the top window unglued to have a second access to the printer.
I used Makedo parts for the door's inges. They look cool and are easy to install (like tie raps). I didn't include the holes or the handle in the model so you can feel free to use whatever you have at home. This box will significantly increase the quality of your 3D printing. A cardboard box would also work... but doesn't look as cool.
When you install the box on your UP!, make sure that the left side touches the spool and that the front touches the bottom of the printer. The dimensions are tight so if you don't do that, there will be some friction. Also, I made it for 1 pound spools. If you use 1 kg spools, the nozzle will touch the box while initializing. So, if you want to use the big spools, you'll have to scale the eps model.
Have fun with your UP!