new one today. happened twice now.
milling pink foam. foam is melting.
i’m not running a roughing pass. just finish. so the bit is dropping straight into 1.5 inches of foam. i just trimmed my feeds and speeds to 100 in/min cut feed and 50 in/min everything else. could it be going too slow. ?
i know i should be using the feed rate calculator - and i will - but has anyone else seen this? got any advice? earlier when this happened i was running at 300 in/min across the board - but the bit was dropping down into a lot of foam and it might have been running slow at that point. so there are some similarities.
interesting if not so scary. glass like material. clearly the odor is not to be encouraged. wicks around the bit like candy floss. i can see how this stuff on fire is really really really to be avoided at all costs. just nasty stuff. the big hole looking thing is the bit spinning with a glob of foam on it. ugh.