New Bit Feeds and Speeds

[thehootens (David Vandenhouten)]

I just got these Solid Carbide CNC Engraving Bits. How do I go about finding the specs that I need to add them to the Carbide Create tool Library.

[WillAdams (William Adams (Carbide 3D))]

Extensive discussion at:

Origin/consistency of chipload recommendations

I’ve been going back to the basics of the whole feeds and speeds thing for a minute, and this time I want to focus on chipload values only, not the infinite number of associated RPM/feed combinations. I collected a small sample of feeds and speeds below from: usual recommand values from 3 or 4 different web sites what CarbideCreate uses the Shapeoko feeds and speeds chart for the #201, 1/4" endmills Will’s [Tableau] (https://public.tableau.com/profile/willadams#!/vizhome/Carbide3DCNCFeedsand…

and

Feeds & speeds

and

#MaterialMonday on YouTube

@wmoy has begin a series of YouTube videos on #MaterialMonday. For the full list: https://www.youtube.com/hashtag/materialmonday A central tenet of this series is an acknowledgement that the hobby CNC routers need different numbers for different sorts of paths. Thus far he has done: Aluminum: Shapeoko 3: [Aluminum Feeds and Speeds for the Shapeoko - #MaterialMonday] [Machining Aluminum with the 278-Z on the Shapeoko - #MaterialMonday] Nomad 883 Pro: [Sing…

[gdon_2003 (Guy Donham)]

Use extreme caution using the OEM recommendations. They are often for industrial machines and not for hobby level machines.

I added the Freud keyhole bit. The Freud site has the following for that particular bit.

Here is my custom database for the Frued Keyhole bit. My feeds and speeds are significantly different for my Shapeoko 3 over the recommended F&S from Frued. On the Keyhole bit you have to make a full plunge and then it moves forward, reverses and plunges back up. The Freud says between 207-276 IPM and I used 60 IPM and that is still likely a little aggressive. So be careful about using the OEM recommendations.

number	vendor	model	URL	name	type	diameter	cornerradius	flutelength	shaftdiameter	angle	numflutes	stickout	coating	metric	notes	machine	material	plungerate	feedrate	rpm	depth	cutpower	finishallowance	3dstepover	3dfeedrate	3drpm
701	Freud	70-104		701 Keyhole	end	0.39	0	0.25	0	0	2	0.125		0				10	60	16000	0.4375		1	1	60	16000

If there is a tool in the C3D database that is close then just duplicate that tool and edit it more conservative and move up as the conditions allow.