I appreciate the thorough comparison. I've seen lots of videos comparing the idle sounds, but it was useful to get an estimate of what each sounded like through material.
What is raising the DB is the tool chatter. You need to play around with the rpm's and feed rate to quite it down. If you had a spindle with ER20 collets you could use larger cutters and further reduce the sound. It could also help if the cutter had a shorter flute length.
I think part of the problem is the stock had more cuts taken out so it changed how much it was able to vibrate. I also had my iPad closer (not by much granted but every bit counts). I don’t have an ER20 capable so that doesn’t really change the results of the test and the before/after used the same tool specifically because that tends to be louder than other bits. As I noted, I slowed the feed rate down because the Makita was struggling to go faster. Granted there are a lot of changes that can be made to further improve but then it doesn’t show like for like comparison. I planned to do another test with recommended speeds but I still can’t change the bit and expect it to be a valid comparison because that’s my loudest bit . It all depends on how much effort I want to put into it.
Spindle is still making 100db when cutting. It is silent only from the start of the program until the first cut. If the dust collector is a wet/dry vac, it is an easy 80db right there. There is no benefit from a spindle other than cutting performance & control.
Yes. You don’t need to upgrade and actually PwnCNC doesn’t recommend changing the bracket due to the additional weight (+7oz with the bracket and plate combination).
I appreciate the thorough comparison. I've seen lots of videos comparing the idle sounds, but it was useful to get an estimate of what each sounded like through material.
What is raising the DB is the tool chatter. You need to play around with the rpm's and feed rate to quite it down. If you had a spindle with ER20 collets you could use larger cutters and further reduce the sound. It could also help if the cutter had a shorter flute length.
I think part of the problem is the stock had more cuts taken out so it changed how much it was able to vibrate. I also had my iPad closer (not by much granted but every bit counts). I don’t have an ER20 capable so that doesn’t really change the results of the test and the before/after used the same tool specifically because that tends to be louder than other bits. As I noted, I slowed the feed rate down because the Makita was struggling to go faster. Granted there are a lot of changes that can be made to further improve but then it doesn’t show like for like comparison. I planned to do another test with recommended speeds but I still can’t change the bit and expect it to be a valid comparison because that’s my loudest bit . It all depends on how much effort I want to put into it.
Good comparison video
Thanks 👍
Spindle is still making 100db when cutting. It is silent only from the start of the program until the first cut. If the dust collector is a wet/dry vac, it is an easy 80db right there. There is no benefit from a spindle other than cutting performance & control.
@@cybergnetwork588 agreed which is why I made a point to run a job to show it’s not quiet all the time.
Are you using the original bracket from longmill mill for your spindle?
Yes. You don’t need to upgrade and actually PwnCNC doesn’t recommend changing the bracket due to the additional weight (+7oz with the bracket and plate combination).