first created part

[Max Martin Richter]

Hej Remco,
now I have time and the hardware to view your part.
Did you try to build a 1x1 Brick?
If yes;

1. normally the boarders are 4 LDU thick.
   
2. you should use a stud primitive for the stud. (See Primitive Reference)
   

and generally:

1. you should BFC your part. (See LDraw.org Language Extension for Back Face Culling (BFC)
   
2. you should use a stud primitive for the stud. (See Primitive Reference)
   
3. if you are doing geometrical elements like the stud manually you could use a cylc or cylo primitive
   
4. please note, that MLCad generates a strange header that doesn't confirm with our rules. You should use Datheader (see posted link by Willy) and/or read our specs for the header.
   

Happy building!

/Max

PS.: Please don't get shocked, when seeing the mass of specs we have. Most of them will you learn step by step and I can tell you, that I don't know all by myself ;-)