drilling out acrylic

[cleanslate]

I made two trumpets this past weekend and used a piece of 5/16" clear dowel to make the mouthpieces out of. One of the mouthpieces turned out OK, but you could still see the scuff(?) marks on the inside of the acrylic. The other one looks terrible on the inside where it was drilled out . I took my time and drilled out about 1/8" at a time. Go in a little, pull the bit back out the whole way to clear the shavings, repeat, repeat, repeat...you get the idea. It seemed to take me forever to get these pieces of acrylic drilled out. Don't get me wrong, they sound great, they just look bad as they are polished real nice on the outside and then it looks as if I drilled them out using sandpaper. any input on how to remedy this in the future would be greatly appreciated.

[prout09]

I use a lubricant when dealing with acrylic keeps heat down thus far ive never really have had any problems. It gets messy but cleans up quick


---
I am here: http://tapatalk.com/map.php?1ptfdq

[cleanslate]

What kind of lube? Something like wd-40, blaster, liquid wrench?

[prout09]

I actualy use transmision fluid in a squirt bottle its worked for me.  I use to have the same issue.  Just played around and came up with that.  Also dont use cheap bits. I have a ton of brad point psi bits that i find to be great for a decent price.


---
I am here: http://tapatalk.com/map.php?jh0j5y

[cleanslate]

Good old tranny fluid, huh? Man, that stuff is great for all kinds of stuff. I'll see if I can find any brad points small enough.

[ctwny1]

I use olive oil...works great.

[prout09]

Olive oil works to if you cant get some trans fluid right away