Beginning summer of 2009, Beginning summer of 2009, Morbark’s Model 3800 and 4600XL horizontal grinder will be able to produce chips in addition to mulch thanks to the company’s new Quick-Conversion Kit. The 3800 and 4600XL grinders can be converted to grind chips in less than four hours, according to Morbark, as the conversion requires neither a crane nor the removal of the entire hammermill. Chips produced are between 5/8 to 3/4 inches depending on the feed rates.