>>8347542I use an Olfa Handle because someone on here recommended it, and I prefer it over an Xacto. I used to use the curved blades (KB4R5), which do exist for Xacto, but they were kinda expensive at $6 for 5 blades So I switched to the KB4 art blades, which cost $7 for 25 blades.
Basic technique to using a knife is to let the blade do the work, and try and angle your thrust upwards. You don't want to push down into the part and gouge it out.
https://www.amazon.com/OLFA-Cushion-Grip-Art-Knife/dp/B0006O87TQ/ref=sr_1_7?dchild=1&keywords=olfa+knife&qid=1596941956&sr=8-7 BTW, this is the exact same thing as the Tamiya Modeler's Knife which you'll see on places like Newtype, it's just yellow instead of black.
https://www.amazon.com/gp/product/B00CLOKRHE/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 