Just wanted to mention an upgrade that is well worth the time and cost. I ordered a 12"x12" sheet of .125" 6061 Aluminum from amazon and used it to make a new bed for my 12" printer. The stock wood bed would warp uncontrollably especially when printing ABS at 110° bed temps. I used the existing bed and transfer punches to mark the holes on the new bed. The only thing I did different was that I replaced the Y axis belt holder assembly with one from Thingiverse that I modified to use round holes instead of the rectangular ones in the stock bed. The other issue is that 12"x12" is borderline too small and I had to drill out the bolt holes in the heat bed just a bit so that the bolts would catch the corners of the bed. I ended up tapping the bed hold down bolt holes in the AL plate.

.125" is more than stiff enough for the replacement bed and it is working great.