Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cheap Plastic

This product worked well for the first few cuts but then the saw began cutting into the sides of the guide slots as it is made from relatively soft plastic. Now it is impossible to make a straight cuts as the guide slots have been widened and angled by the saw biting into them. I have much experience with hobby crafting so this is not a result of misuse. I have since ordered a aluminum miter box. The one positive aspect of this product is the added angle (30 degrees?) in addition to the standard 90 and 45 degree guides but this is not enough to redeem this product. If you plan on using it for more than a few cuts invest in a metal miter box.