Mapangidwe ake apadera amakhala ndi mawonekedwe a mabowo kapena ma grooves, omwe amawapangitsa kukhala abwino kwa ntchito zosiyanasiyana. Chimodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri ndi mapanelo azitsulo okhala ndi perforated ndi m'mafakitale omanga ndi kupanga. Ma board awa amagwiritsidwa ntchito nthawi zambiri kukongoletsa, ndikuwonjezera kukongola kwamakono ndi mafakitale ...