At 14ish layers the left front corner of my printruder head started to curl up. I had hoped the warping would be contained to one corner and was praying for a good outcome. Needless to say (and judging by the picture on the right) the warping had become so bad that the print head ended up outside the object and was crashing into it repeatedly. I quickly stopped the build, afraid my extruder could become damaged from crashing into a fairly thick wall already.
So i ordered a Makerbot Heated Build Platform v2 and assembled it.
The build
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Putting the HBP together was a bit overwhelming at first, because i had never SMT soldered before. The whole hot plate thing sounded a truckload of work (and allot of money to spend for something i'll probably only use once). Luckely i could turn to an electronical engineer at work who said you can SMT solder by hand without a hot plate. You just need a good soldering iron and good quality solder. He showed me how to do it, and behold - i SMT soldered ALL the components perfectly without prior experience and WITHOUT a hot plate :)
If you follow the manual on the wiki it's all very straight forward. There's no pitfalls - just take your time, solder in a very well lit environment and use magnifiers (those come in handy!).
Take note of the orientation for the leds, the green markings are horribly small.
When everything was assembled i sawed off the tips off the nuts. Next time i'm in a hardware store i'll search for screws i can sink into the metal so nothing sticks out on top. But sawed off i don't loose any build space either.
