Craftsman 10" Table Saw Model 113.27520

I purchased this saw paid 100.00 dollars. It is mounted on very sturdy wood box which acts as stand. Seems to be in excellent condition for its age. It is very heavy made and would like info on cast iron extension tables if available. This is my 1st table saw . I like to build jewelry boxes and small keepsakes. I am a beginner have been doing most by hand and I am advancing.