PDA

View Full Version : drill bits for the er-20



aokweld101
01-11-2014, 11:35 AM
I'm needing 1/8 carving bits for my machine I was wanting to know what was best to use on it is there different number on how many flutes and what is the best to use, the last one I bought didn't last long that is why I am asking..Thank you...

bergerud
01-11-2014, 11:38 AM
Carving or cutting bits? ER20 or ER11?

aokweld101
01-11-2014, 12:06 PM
my mistake again 1/8 cutting bits...ER 20

bergerud
01-11-2014, 12:44 PM
I think you also mean ER11. Anyway, I just bought a pile of these:

http://www.dhgate.com/product/3-175-25-mm-double-edged-flute-spiral-cnc/168754539.html#s1-4-1|989724345

I do not know how long they will last, but at $2 each, they are disposable!

aokweld101
01-11-2014, 12:58 PM
My mistake again... opening mouth to take foot out...lol

aokweld101
01-11-2014, 01:47 PM
I ordered a bunch of them, do you have something like that for the 1/8 c.a.r.v.i.n.g bits ? :D

bergerud
01-11-2014, 02:03 PM
You mean 1/16" carving bits? No, not really. I was thinking abut

http://www.aliexpress.com/item/R0-75-30L-6D-2F-taper-two-flute-spiral-ball-caibide-end-mills-cnc-router-bits/796342472.html

but they are 6 mm shanks and you have to buy 10. They would fit in the ER11 with the 1/4" collet but if one was serious, a 6 mm collet would be best.

RogerB
01-11-2014, 02:49 PM
bergerud will they work good for drilling holes for cribbage boards. I think it would be worth trying.

bergerud
01-11-2014, 03:00 PM
If you mean the 1/8" end mills:

http://www.dhgate.com/product/3-175-...-4-1|989724345 (http://www.dhgate.com/product/3-175-25-mm-double-edged-flute-spiral-cnc/168754539.html#s1-4-1%7C989724345)

Sure these will do anything the CW 1/8" cutting bit will do but the shanks are short. You would need the ER11M adapter or some other way to hold them.

RogerB
01-11-2014, 03:12 PM
Thanks good to know I did one cribbage board and found the bit was a little hot and yes I have the er11M adapter.

aokweld101
02-05-2014, 10:12 PM
I just have gotten done with a carve I modified the ornamental box and used the ER-11 and the bits that bergerud had suggested on getting from DHgate I am very pleased with the bits that I had ordered I bought 15 of them for $2.00 apiece and I was a Little Leary of the bits being from china, I didn't leave the machine, I made pocket cuts and the cut outs. It's become my bit of choice....Thank you Bergerud...Job well done, Sir

CNC Carver
02-06-2014, 06:52 AM
Bergerud have you tried these for carving bits? http://www.dhgate.com/store/product/r0-5-30h-6d-75l-2f-customized-hrc55-cone/168812359.html

chebytrk
02-06-2014, 08:19 AM
Bergerud have you tried these for carving bits? http://www.dhgate.com/store/product/r0-5-30h-6d-75l-2f-customized-hrc55-cone/168812359.html

What's the length of these bits? Are they 1/4 shank?

bergerud
02-06-2014, 08:50 AM
Bergerud have you tried these for carving bits? http://www.dhgate.com/store/product/r0-5-30h-6d-75l-2f-customized-hrc55-cone/168812359.html

No, I have not tried those bits. They have 6 mm shanks. I have tried some like:

http://www.aliexpress.com/item/6-30H-R1-0-10-Degree-60L-Taper-Ball-End-Mill-For-Engraving-Wood-Material-Wood/601915315.html

which also have 6 mm shanks. They seemed to work ok but I think they require a little more power and they made that characteristic router bit whine.

I have 6 mm collets but the 6 mm shanks can also be held by the 1/4" ER collets.

(The tapered bit you were looking at Jerry has a cutting length of 30 mm and a ball diameter of 1 mm.)

aokweld101
02-06-2014, 08:59 AM
I don't know what the length is, they are a little shorter and have a .125 shank and two fluted, being two fluted it really kicks out the sawdust I lighten up the passes on the pocket cuts was .2 depth and went .1 for two passes and went .25 on the cut outs.. I stand corrected it is 6m but it fits in a .125 collet

bergerud
02-06-2014, 09:07 AM
Not only does the two flute get the chips out better, it cuts better. There is no shrill like you get from having too many cutting edges going too slow. The shrill comes later when they get dull.

bergerud
02-06-2014, 11:07 AM
I stand corrected it is 6m but it fits in a .125 collet

The cutting bits are 1/8" as you originally said. Jerry was talking about different carving bits. Those carving bits have a 6 mm shank which is just a little less than 1/4".

DocWheeler
02-06-2014, 11:34 AM
Dan,

Can't beat the price on the links you posted, very inexpensive indeed.
I would like to add that Ron Justice sells small diameter bits at cwparts.com.

aokweld101
02-06-2014, 01:00 PM
Ooops....I'm not familiar with MM...lol

racer
02-06-2014, 01:27 PM
6 MM X .03937 in = .2362 in Hope that helps

aokweld101
02-06-2014, 01:41 PM
That formula is not going to help I don't use mm that often but do appreciate it.....