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Hi - sorry if this has been covered here before, but a quick search didnt give me the information i am lookin for.

I am from the United Kingdom, and although we originaly gave the world imperial measurements of feet and inches etc, we have used the metric system of mm for as long as i can remember - and i am in my forties. The only reason i am familiar with feet and inches is because i used to work at weekends with my late father who only worked in feet and inches and couldnt get his heas around metric.

So - my query.Obviously we have router manufacturers in the UK, such as Trend, but even they seem to make or at least advertise their cutters as either 1/2 or 1/4 inch although there are some refrences to collet sizes of 8mm and 12mm - which almost but not quite compare.

The question is therefore are manufacturers from the UK and the USA etc all using the same measurement system or are they just using a naming convention? I am interested as i have just purchased a Triton MOF001 router (which is made in Australia) which is a 1/2 inch router, and I would like to know if i purchase Trend cutters will they fit?

Also - we have several very good tool specialists in this country that import a lot of cutters from the USA, and it may be preferable (dependant on price and quality) to purchase from these companies - but before shelling out the cash i would like to know they fit.

Any comments greatefully recieved

Dave
 

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Hi - sorry if this has been covered here before, but a quick search didnt give me the information i am lookin for.

I am from the United Kingdom, and although we originaly gave the world imperial measurements of feet and inches etc, we have used the metric system of mm for as long as i can remember - and i am in my forties. The only reason i am familiar with feet and inches is because i used to work at weekends with my late father who only worked in feet and inches and couldnt get his heas around metric.

So - my query.Obviously we have router manufacturers in the UK, such as Trend, but even they seem to make or at least advertise their cutters as either 1/2 or 1/4 inch although there are some refrences to collet sizes of 8mm and 12mm - which almost but not quite compare.

The question is therefore are manufacturers from the UK and the USA etc all using the same measurement system or are they just using a naming convention? I am interested as i have just purchased a Triton MOF001 router (which is made in Australia) which is a 1/2 inch router, and I would like to know if i purchase Trend cutters will they fit?

Also - we have several very good tool specialists in this country that import a lot of cutters from the USA, and it may be preferable (dependant on price and quality) to purchase from these companies - but before shelling out the cash i would like to know they fit.

Any comments greatefully recieved

Dave
Hi David - Welcome to the forum:)

There has been quite an ongoing discussion on just that topic here:
http://www.routerforums.com/guide-b...36-utter-stupidity-imperial-measurements.html

:wacko:
 

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Welcome I am not the person for such an answer as I use both only because sometimes the metric is easier to read and make halves or 1/4 's
 

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Hi - sorry if this has been covered here before, but a quick search didnt give me the information i am lookin for.

I am from the United Kingdom, and although we originaly gave the world imperial measurements of feet and inches etc, we have used the metric system of mm for as long as i can remember - and i am in my forties. The only reason i am familiar with feet and inches is because i used to work at weekends with my late father who only worked in feet and inches and couldnt get his heas around metric.

So - my query.Obviously we have router manufacturers in the UK, such as Trend, but even they seem to make or at least advertise their cutters as either 1/2 or 1/4 inch although there are some refrences to collet sizes of 8mm and 12mm - which almost but not quite compare.

The question is therefore are manufacturers from the UK and the USA etc all using the same measurement system or are they just using a naming convention? I am interested as i have just purchased a Triton MOF001 router (which is made in Australia) which is a 1/2 inch router, and I would like to know if i purchase Trend cutters will they fit?

Also - we have several very good tool specialists in this country that import a lot of cutters from the USA, and it may be preferable (dependant on price and quality) to purchase from these companies - but before shelling out the cash i would like to know they fit.

Any comments greatefully recieved

Dave

These are actual measurements as far as collet size is concerned. A 12mm collet is not the same size as a 1/2" collet and an 8mm collet is not the same size as a 1/4" collet. Your collet needs to match your bit shank. Many router manufacturers offer collet assy's (collet and nut) in both inches and mm.
 

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Discussion Starter #5
John - thanks for the link - i gave up on about page 12...

Shank and Collet - gotta match - got it!

I suppose the answer i have come to is that although there are some great importd from the USA i need to stick to UK or EU made cutters for the simple reason they are dimensioned in mm and aimed to be compatible with metric timber and sheet goods.

Thanks for all the comments
 

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David, your router has a 1/2" collet therefore ANY 1/2" shank bit is suitable and by using a 1/2" to 1/4" reducer sleeve ANY bit with a 1/4" shank will be a perfect fit. Sleeves are also generally available, especially in the UK, to reduce the 1/2" collet to 8 and 10mm.
 

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In the Uk the issue is confused further by a legal requirement to describe things in metric, resulting in all sorts of funny metric dimensions like 12.7mm, which on closer inspection, are actually 1/2" imperial.
As Harry says, any 1/2" bit from Rutlands, Axminster or Trend will fit your Triton router.
Phil will see more day to day usage in the UK and will probably comment, but my impression was, before escaping, that although people like Trend, Freud and CMT offer 8mm in their range, few users in the UK bought them and the 1/2" (12.7mm) and 1/4" (6.35mm) shank cutters were still the popular ones.

It is different down here, where 8mm seem to be the most common, although, in a land where routing is less of a hobby, bigger jobs get done on shapers, so we don't see much 12mm shank stuff. Personally, I use them all, but I've got appropriate collets.

Cheers

Peter
 

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I am from the United Kingdom, and although we originaly gave the world imperial measurements of feet and inches etc, we have used the metric system of mm for as long as i can remember - and i am in my forties.
Ah-ha! A callow youf!

So - my query.Obviously we have router manufacturers in the UK, such as Trend, but even they seem to make or at least advertise their cutters as either 1/2 or 1/4 inch although there are some refrences to collet sizes of 8mm and 12mm - which almost but not quite compare.
Phil will see more day to day usage in the UK and will probably comment, but my impression was, before escaping, that although people like Trend, Freud and CMT offer 8mm in their range, few users in the UK bought them and the 1/2" (12.7mm) and 1/4" (6.35mm) shank cutters were still the popular ones.
In short it's all historical. In longer terms the UK, Australia, etc and other parts of the former "British Empire" as well as the USA router shanks are commonly available in 1/4in and 1/2in (or 6.35mm and 12.7mm). Whilst I was taught in metric in the 1960s the engineering industry didn't make the switch until the 1970s and even there the change was never enforced in law unlike some countries - one reason why we quote distance in miles (and fuel consumption in mpg) whilst all fuel is dispensed in litres! Looking back we used to have routers with shank sizes of 3/8in (9.53mm) and 5/8in (15.9mm) although they've pretty much fallen by the wayside. In continental Europe thanks to a certain M. Boneparte they use the metric system with collets in 6mm, 8mm, 10mm and 12mm. Once again 10mm has all but disappeared in recent years although I think that Scheer still use it for some specialised cutters.

In reality in the UK you'll normally only see cutters with 1/4in or 1/2in shanks with a small number of 8mm shanks from specialised suppliers such as Festool, Leigh (dovetail jigs, etc) and the like. As Robert and Peter say 6mm is NOT 1/4in, 1/2in is NOT 12mm. In fact the only time you're ever likely to come across those shank sizes would be if you were to buy on somewhere like eBay Germany. I doubt that it will be an issue and if you wish to buy from the USA you won't have any problems as even the Americans use the same 1/4in as we do........ To be helpful most "European" router manufacturers (e.g. deWalt, Festool, Metabo, Felisatti, Freud, Bosch, et al) produce collets to cover the full range of sizes both metric and inch. For example small deWalt routers (like the DW613 and DW621 and Trend T5) have 6mm, 1/4in and 8mm collets available in the UK whilst my personal favourite the DW625 together with its' siblings of DW624 and DW626 (and Trend T10/T11) have 6mm, 1/4in, 8mm, 12mm and 1/2in available. American manufacturers have traditionally not exported to Europe and therefore tend to offer only inch size collets (although Porter-Cable do list an 8mm collet for their routers) whilst the Japanese manufacturers seem to offer inch size collets in the UK but reserve the metric size ones for Europe.

The only problem area seems to be with low-cost (Chinese) imports where the people dealing with the tools sometimes can't seem to understand that 1/4in IS NOT 6mm and as a consequence they supply the wrong collets. A clear example of someone using an approximation as opposed to an absolute conversion of the sizes.

Hope that helps

Regards

phil
 
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