: Avoid standard superglue; use a two-step plastic bonder like Loctite Plastic Bonder
– This is the most common large plastic housing piece for the upper arm. Alternative Top Cover Part #SB0785001 Brother Ps-300b Crack
which is designed to withstand the machine's high vibrations. Stop-Drilling : Avoid standard superglue; use a two-step plastic
– Listed as a standard top cover replacement in various Brother industrial parts catalogs. Bed Cover Assembly Part #132254001 : Avoid standard superglue
for the PS-300B there to identify the exact diagram number for your cracked piece. Industrial Sewing Machine | Brother Temporary Repair Alternatives