I used to cut at right angles with a gauge so far and saw it with a saw or round saw, but I used it for cut at right angle, 45 degrees angle with handwriting saw, but I was able to work more accurately than I thought. Depending on how to enter sawtooth it may hurt the main body, but at this price it is satisfactory to purchase it as it will help cutting with high precision as expendable items.
Although we use it considerably carefully, it is unavoidable to shave the body by all means, so a division as a consumable is necessary. I think that it is natural rather than hurting a saw, but it is good. I will purchase again when the precision is no longer good.