<p>I had this idea for bulky parts for just printing the shell (PLA) then pouring in some kind of filler in to make up the bulk/strength.</p>

<p>Printing bulk .2mm at a time line by line is slow and subject to warping!</p>

<p>So I though precision print a shell and fill it with 'something' - has this been done by anyone? What is a good something to use?</p>

<p>Yours hopefully!</p>

Or you could use a second head to do low-density infill with very thick layers, like a 1.5mm nozzle and 1.2mm layers.