A spiral fluted up cutter sports a number of cutting edges or “teeth” which means that for every rotation of the bit, that number of edges will be cutting your material. These bits are like a traditional drill bit in which the spirals direct chips up. A benefit of a spiral fluted up cut is that you can drive your bit faster in feed than a single flute. For example, with 2 flute you are able to go 2x faster than a 1 flute, 3 flutes 3x and 4 flute 4x. These cutters are primed for high efficiency cutting on woods but do leave a slight burr on the top of your material and a clean finish on the bottom side.

Suitable for

Plastics (ABS, acrylic, HPDE etc.) - 3 & 4 flute not suitable
Wood (MDF, hardwood)
Wood (Ply & softwoods)

Adam’s Tips

Up cuts have a tendency to pull up the material you are cutting. Ensure that the you are using suitable hold down methods such as double sided tape, masking tape + super glue or clamps over a small area. Also watch out for cut parts popping up if you are using a dust boot.

Feeds and Speeds - Up cut for Wood mm per minute
Feeds and Speeds - Up cut for Wood mm per minute		Wood
Item Code	Description	Soft	Hard
1-1/8-SP-2F-6	1mm x 3.175mm x 6mm 2F	1,450	750
1.5-1/8-SP-2F-6	1.5mm x 3.175mm x 6mm 2F	2,450	1,250
1.5-1/8-SP-2F-12	1.5mm x 3.175mm x 12mm 2F	1,900	950
2-1/8-SP-2F-12	2mm x 3.175mm x 12mm 2F	2,850	1,450
2-1/8-SP-2F-17	2mm x 3.175mm x 17mm 2F	2,300	1,150
1/8-1/8-SP-2F-13	3.175mm x 3.175mm x 13mm 2F	5,800	2,900
1/8-1/8-SP-2F-17	3.175mm x 3.175mm x 17mm 2F	4,850	2,450
1/8-1/8-SP-2F-22	3.175mm x 3.175mm x 22mm 2F	3,900	1,950
1/8-1/8-SP-2F-32	3.175mm x 3.175mm x 32mm 2F	2,500	1,250
4-4-SP-2F-22	4mm x 4mm x 22mm 2F	6,000	3,000
4-4-SP-2F-42	4mm x 4mm x 42mm 2F	2,450	1,250
6-6-SP-2F-22	6mm x 6mm x 22mm 2F	14,950	7,500
6-6-SP-2F-32	6mm x 6mm x 32mm 2F	9,550	4,800
6-6-SP-2F-62	6mm x 6mm x 62mm 2F	2,500	1,250
3.175-6.35-SP-2F-17	3.175mm x 6.35mm x 17mm 2F	4,850	2,450
4-6.35-SP-2F-22	4mm x 6.35mm x 22mm 2F	6,000	3,000
6.35-6.35-SP-2F-22	6.35mm x 6.35mm x 22mm 2F	17,300	8,650
1/8-1/8-SP-3F-22	3.175mm x 3.175mm x 22mm 3F	5,800	2,900
4-4-SP-3F-22	4mm x 4mm x 22mm 3F	9,000	4,500
6-6-SP-3F-22	6mm x 6mm x 22mm 3F	22,400	11,200
1/8-1/8-SP-4F-22	3.175mm x 3.175mm x 22mm 4F	7,750	3,900
4-4-SP-4F-22	4mm x 4mm x 22mm 4F	12,000	6,000
6-6-SP-4F-22	6mm x 6mm x 22mm 4F	29,900	14,950

Revolutions per minute 16,000RPM
100% width per cut slotting
Depth per cut Diameter x 1

43 Reviews Hide Reviews Show Reviews

4
Good cut

Posted by Michael Taylor on 21st Jun 2021

Cuts well on high speed
5
Great bit and great value

Posted by Alem Mirvich on 7th Jun 2021

Been using these for a while, great for aluminium, acrylic and Alucabond.
5
Great Product, Prompt Delivery

Posted by Tiere Van't Westeinde on 13th Apr 2021

I've ordered a couple of these now and after a little experimenting to find the correct work settings for my little desktop CNC to accommodate such a fine and precise bit these guys have worked a dream. Thank You!
5
4F Upcut on Desktop CNC

Posted by Cam Penrose on 4th Apr 2021

I use Adam's 4F Upcut with a 6mm shank for all flattening and large removal applications on a small desktop router, and with zero chatter and flawless finish, the bit really shines for all desktop use, and I'd bank on it for all large-scale use as well. 10/10
4
2F upcut bit.

Posted by Kit on 17th Mar 2021

Quick delivery, good prices, good end mill.
5
Service

Posted by Andrew on 10th Mar 2021

Great product, excellent service and fast delivery
5
2 flute uncut bit

Posted by Trevor Broadbent on 26th Jan 2021

Excellent value for money cuts very nice
5
Quality product

Posted by Martina Zabert on 17th Nov 2020

Really good quality and service
5
6mm 2flute upcut bit

Posted by John on 28th Aug 2020

Thanks Adam for the advice prior to me making the choices of bits. this one performs like you said and I am happy with the results. I'll be calling on you again in the near future when I'm ready to increase my arsenal of bits.