417 Microballoons
West System 417 Low-Density filler (previously 407) is a blended microballoon-based
filler used to make fairing putties that are easy to sand or carve. Reasonably strong on a
strength-to-weight basis. Cures to a dark red/brown colour.
Available in 4L. 1L bag has been discontinued. Larger quantities available on request.
