http://www.mycncuk.com/forums/ Discuss Tooling relative to CNC Machining and anything else related. en Fri, 18 May 2012 06:40:32 GMT vBulletin 60 http://www.mycncuk.com/forums/images/misc/rss.png http://www.mycncuk.com/forums/ http://www.mycncuk.com/forums/showthread.php/4544-Cutting-bits-nomenclature-help-requested?goto=newpost Sat, 12 May 2012 08:14:06 GMT I'm gradually building up a collection of different sized routing/milling bits for my CNC3040, and want to store them in a big box with a drilled plate and labels, so I can quickly find the one I want for a particular job. To keep the descriptions short I'm wondering if there's a 'standard' shorthand nomenclature for the main dimensions of bits. (I'm a retired electronics engineer, with little experience in machining; i.e. ignorant!)

Apart from a verbal description of the type ('end cutter', 'ball-end', 'half-flat', etc), is there a standard order for the numbers? - particularly: shank diameter, cutting diameter, cutting (flute) length, number of flutes.

If there's a 'standard' order for listing these, I could just have something like '3.0/2.0/8.0/2' next to a bit, and know exactly what it means. Of course if there's no widely-recognised standard, I can just devise my own (like that example).

Thanks in advance.

Daniel
Gerroa, Australia ]]> DanielF http://www.mycncuk.com/forums/showthread.php/4544-Cutting-bits-nomenclature-help-requested http://www.mycncuk.com/forums/showthread.php/4511-45-Degree-and-round-over-bits?goto=newpost Thu, 03 May 2012 14:37:08 GMT Hi guys,

I need a 45 deg V bit for making mitre joints on ~18mm MDF. If possible I'd like the option of using the same bit for chamfer jobs on aluminium.

Can you recommend? Should I just get a general good quality hand router bit?

Secondly I need a round-over bit for the same materials. Probably got more use for aluminium on this one. ]]> Tenson http://www.mycncuk.com/forums/showthread.php/4511-45-Degree-and-round-over-bits http://www.mycncuk.com/forums/showthread.php/4498-Looooooong-Cutters?goto=newpost Mon, 30 Apr 2012 22:04:00 GMT Hiya, Could anyone recommend suppliers of LONG cutters for 3D work... That is to say cutters in excess of 76mm total length.. In a perfect world,... Hiya, Could anyone recommend suppliers of LONG cutters for 3D work... That is to say cutters in excess of 76mm total length..

In a perfect world, a long hogging cutter and long 8mm twin flute ball nose (possibly a 6mm too)

I have some Titman 76mm length ones at the moment which can deal with 50mm material/depth easily..... (12mm Hogging and 8mm ball nose)
Anybody else used the hogging cutters? they are awesome! like a hot knife through butter!)

Any recommendations would be appreciated.

Cheers ]]> GMCNC http://www.mycncuk.com/forums/showthread.php/4498-Looooooong-Cutters http://www.mycncuk.com/forums/showthread.php/4496-Thread-Tapping?goto=newpost Fri, 27 Apr 2012 21:04:09 GMT I posted this in another thread I found from a search, but I think it might go amiss hidden deep in the market place.

I'd like to do some M5 thread tapping with my cordless drill. It has the option to gear-down for slower, high torque applications so seem suitable.

In this case do you think it is better to use a spiral flute bit typical of automated tapping, or just go with the usual hand-tapping bits? Maybe the best is to start by hand with a tapping bit, then switch over to a spiral flute on the drill.

If someone is kind enough to send me a little block of steel (see classifieds), I plan to make a guide to start the thread at a nice right-angle. ]]> Tenson http://www.mycncuk.com/forums/showthread.php/4496-Thread-Tapping http://www.mycncuk.com/forums/showthread.php/4485-Lubricant-for-router-cutter?goto=newpost Wed, 25 Apr 2012 17:58:24 GMT Hi all,

I'm cutting beech on my CNC router and I wonder what can I do to get the best tool life. Someone once told me there was some kind of wax crayon type of lubricant and you rub it onto the flutes of the cutter periodically (might have been made by Rocol, but not sure). Anyone heard of that, or used it?

Any thoughts appreciated, the cutters are v. expensive so I just want to get the most out of them.

Thanks.
Richie. ]]> Richie http://www.mycncuk.com/forums/showthread.php/4485-Lubricant-for-router-cutter http://www.mycncuk.com/forums/showthread.php/4448-Help-identifying-a-tool?goto=newpost Sat, 21 Apr 2012 11:55:47 GMT I'm in the process of gathering all the tools I'll need for my build which I don't already own. I've thought of one tool that would be great but cannot for the life of me remember what it's called. It's kind of like a vernier calliper but with a scribe in the centre for marking? ]]> jonbabbz http://www.mycncuk.com/forums/showthread.php/4448-Help-identifying-a-tool http://www.mycncuk.com/forums/showthread.php/4418-Single-Flute-vs-Ripper?goto=newpost Fri, 13 Apr 2012 17:06:29 GMT I remember reading a post on here saying that for cutting plywood, it is best to use a very high feedrate and shallow but, with a single flute... I remember reading a post on here saying that for cutting plywood, it is best to use a very high feedrate and shallow but, with a single flute cutter.

There seems to be general recommendation of single flute cutters for general wood routing. Has anyone compared these to 'ripper' types? I've read that ripper bits eat up wood cuts, but how is the finish of the cut in comparison to a single flute mill?

I'm thinking about getting one of these at the bottom of the page - http://www.cutweltools.co.uk/files/w...%20carbide.pdf. ]]> Tenson http://www.mycncuk.com/forums/showthread.php/4418-Single-Flute-vs-Ripper http://www.mycncuk.com/forums/showthread.php/4330-Router-bit-recommendation-spindle-speed-and-feed-rate?goto=newpost Fri, 23 Mar 2012 07:26:39 GMT Hi guys, We are trying to cut through 6.5mm and 9mm birch plywood sheets, ideally with a 5mm wide bit (so we can drill 5mm holes in the same pass).... Hi guys,
We are trying to cut through 6.5mm and 9mm birch plywood sheets, ideally with a 5mm wide bit (so we can drill 5mm holes in the same pass).
We have purchased a number of different bits, double flute straight .. Up cut spiral etc..

What spindle speed do you think we should be running at? And feed rate also?

Cutting through the wood in 2/3 or three passes is fine!



We are using a 8x4 router, with a max spindle speed of 24'000 rpm (I believe).

Many thanks! ]]> FlightCaseCo http://www.mycncuk.com/forums/showthread.php/4330-Router-bit-recommendation-spindle-speed-and-feed-rate http://www.mycncuk.com/forums/showthread.php/4252-Chinese-vfd-spindle-question?goto=newpost Thu, 01 Mar 2012 20:47:36 GMT Hey guys,

I bought one of these not long ago and plumped for the 2.2kw version thinking that's about the limit for our 230v 13A sockets. Weird thing is I was looking through the vfd manual and found reference to it consuming 7.5A at 220v. Now I'm wondering if I could have gone for the 3kw version which claims 10A at 220v or possibly even the 4kw (12.5A 220v).

What am I missing here? ]]> Shinobiwan http://www.mycncuk.com/forums/showthread.php/4252-Chinese-vfd-spindle-question http://www.mycncuk.com/forums/showthread.php/4220-water-cooled-spindle-opinions?goto=newpost Thu, 23 Feb 2012 09:57:06 GMT anyone advise best WC spindle to get please, cutting Brass and Ally, using a kress at the moment would like to upgrade to cut down a little on noise.... anyone advise best WC spindle to get please, cutting Brass and Ally, using a kress at the moment would like to upgrade to cut down a little on noise.

Phill ]]> phill05 http://www.mycncuk.com/forums/showthread.php/4220-water-cooled-spindle-opinions