I just received some new 1/8" cutting bits from LHR. The new bit is on the left, an old bit center, and one that I got prior to this latest one on the right. The helix angle appears to be even less on the newest bit than the old bit. I ran my gear test project and the new bit performed well. It ran at about 100-110 degrees F with one spike to 119. Clean cut and no burning. Back in business.