Where do most of you guys building custom boxes find 3/4" MDF? The last time I checked at my local Lowes and Home depot seems at that time they only carried 5/8" MDF, is this sufficient if thats all they carry. Like I said, it's been over 3 years since the last time I checked. I'll be going out today to see what they have as far as 3/4" lumber goes. If this option is not available, what type of lumber would you use next? Thanks!