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post #1 of 20 (permalink) Old 03-02-2015, 02:44 PM Thread Starter
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Default Largest Guide Bush

Am I correct in say the largest standard guide bush for the Dewalt DW625E is 30mm? Does anyone do anything larger that would fit the base of these routers? Or, will I need to machine one myself from a hunk of duralumin?
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post #2 of 20 (permalink) Old 03-02-2015, 03:16 PM
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Yes I believe 30mm is the largest
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post #3 of 20 (permalink) Old 03-02-2015, 07:25 PM
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Am I correct in say the largest standard guide bush for the Dewalt DW625E is 30mm? Does anyone do anything larger that would fit the base of these routers? Or, will I need to machine one myself from a hunk of duralumin?
Hi Brian

Don't believe those who are telling you 30mm - in the UK the actual answer is 40mm - from Trend - there's a 6mm projection one and a 14mm projection one. The price on the net should be 25 to 30% off the "official" price. If you need to go larger you'll need a sub base machined to take the Trend T11 guide bushes which are made in sizes of 50, 60 and 70mm because those guide bushes don't directly fit the DW625 or Trend T11 (which are almost identical because they come off the same production line). Those large guide bushes are 95mm in diameter overall as opposed to the standard Trend/Elu/DW (all the same) guide bushes which are 60mm overall diameter

As an aside Axminster sell a 32mm steel guide bush which is only 2mm bigger that DWs biggest, but that may be of use to some. Their steel guide bushes are remarkably cheap and not bad at all

Regards

Phil

"Unfortunately there is lots of bad information online; some of it is really scary. It's probably not intentional, but I've seen some content that sets up the illusion that you can do whatever you want and get away with it" - Norm Abram in an interview with Jefferson Kolle

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post #4 of 20 (permalink) Old 03-03-2015, 01:21 AM Thread Starter
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Hi Phil
I've done a search and came up with the shallower 40mm x 6mm one which will do at a pinch for the DW625, although I'd prefer the deeper one. I'll not be using it as guide bush per se. More as a spigot to allow the router to accurately and repeatedly locate into a range of skis to run along a box jig. All a bit specialised to avoid the bulk and cost of a spindle moulder, jigs and custom knives.

Nevertheless many thanks for the heads-up.

Ah! I've now found the deeper one.

Last edited by boldford; 03-03-2015 at 01:27 AM. Reason: Update
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post #5 of 20 (permalink) Old 03-03-2015, 07:18 AM
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Hi Brian

Glad to know that you are sorted. With Trend stuff even if you can't locate it on the 'net there's often a local dealer who'll get it in for you. Generally takes 24 to 48 hours.

Sounds like an interesting project

Regards

Phil

Edit: Previous post should have read "deWalt DW625 and Trend T10" (not T11 as stated) The big guide bushes are, of course, designed to fit the T11 directly

"Unfortunately there is lots of bad information online; some of it is really scary. It's probably not intentional, but I've seen some content that sets up the illusion that you can do whatever you want and get away with it" - Norm Abram in an interview with Jefferson Kolle

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post #6 of 20 (permalink) Old 03-04-2015, 04:41 AM
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Hi Phil
I've done a search and came up with the shallower 40mm x 6mm one which will do at a pinch for the DW625, although I'd prefer the deeper one. I'll not be using it as guide bush per se. More as a spigot to allow the router to accurately and repeatedly locate into a range of skis to run along a box jig. All a bit specialised to avoid the bulk and cost of a spindle moulder, jigs and custom knives.

Nevertheless many thanks for the heads-up.

Ah! I've now found the deeper one.
You don't say what bit you're going to be using, but if you are only looking for the larger OD to provide better location in your fixture, then you might consider shrinking a sleeve on the OD of an existing bushing. This would have the advantage that the bushing could be used in a standard baseplate.

Tom
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post #7 of 20 (permalink) Old 03-04-2015, 10:51 AM Thread Starter
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I intend to be using a 30mm diameter cutter (Wealden T1430M) which needs to fit through a hole bigger than what I originally thought was the biggest available guide bush for a DW625EK. Although I've got a metal working lathe the availability of a 40mm bush saves a whole heap of time and effort.
Hopefully life is becoming more straight-forward for one of my projects.
Can anyone comment how best to accurately centralise this large guide bush. The 30mm DE6301 comes with a centralising gadget. Or is this another project for the lathe?

Last edited by boldford; 03-04-2015 at 11:00 AM.
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post #8 of 20 (permalink) Old 03-04-2015, 04:50 PM
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Can anyone comment how best to accurately centralise this large guide bush. The 30mm DE6301 comes with a centralising gadget. Or is this another project for the lathe?
Hi Brian

The DE6301 is designed to hold the original tube-type guide bushes, the centring cone (centring mandrel) is available separately (it used to be supplied). I'll dig out the part number for you and post tomorrow. I'll also get the size off mine and confirm if it will do the job oR NOT). Even if it won't the Festool centring mandrel will - it is definitely 40mm, but at one heck of a price in comparison to DW.

The way you use the DW is to fix the three lobe conversion plate onto the base of the router, then screw the guide bush onto the three lobe plate, leaving the screws slightly loose. the centring mandrel is inserted into the collet and the router lightly plunged so that it just touches the GB. Tighten the GB screws. I find it better to substitute button-head hex-drive machine screws for the countersunk head screws from DW or Trend. They give you a bit more wiggle room.

Regards

Phil

"Unfortunately there is lots of bad information online; some of it is really scary. It's probably not intentional, but I've seen some content that sets up the illusion that you can do whatever you want and get away with it" - Norm Abram in an interview with Jefferson Kolle
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post #9 of 20 (permalink) Old 03-05-2015, 04:04 AM
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Hi Brian

The DW centring mandrel will indeed work with a 40mm O/D guide bush (the cone is actually 39.5mm diameter at it's max), HOWEVER, deWalt in their infinite wisdom have dropped the part from their listings in the last 5 years since I bought one (confirmed by telephone this morning, sorry). Trend don't sell it or a direct equivalent, either, because their approach is to offer a sub-base, special centring guide bush and a centing pin at about £30. So, that leaves the Festool centring mandrel ZD-OF/D 6,35+8:



which needs to be used with an 8mm or a 1/4in collet (the DW was used with a 1/2in collet). I've just checked mine and it is about 41.5mm max diameter and so will work with a 40mm GB. At just under £15 on the linked supplier they are a bit more expensive than the original DW item but still cheaper than I recall. The DW was (from memory) less than a tenner. Either way still cheaper than Trend's solution - and you don't lose 5mm or so off your plunge depth, either

Hope this helps

Regards

Phil

"Unfortunately there is lots of bad information online; some of it is really scary. It's probably not intentional, but I've seen some content that sets up the illusion that you can do whatever you want and get away with it" - Norm Abram in an interview with Jefferson Kolle

Last edited by Phil P; 03-05-2015 at 05:53 AM.
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post #10 of 20 (permalink) Old 03-05-2015, 04:41 AM
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Originally Posted by boldford View Post
I intend to be using a 30mm diameter cutter (Wealden T1430M) which needs to fit through a hole bigger than what I originally thought was the biggest available guide bush for a DW625EK. Although I've got a metal working lathe the availability of a 40mm bush saves a whole heap of time and effort.
Hopefully life is becoming more straight-forward for one of my projects.
Can anyone comment how best to accurately centralise this large guide bush. The 30mm DE6301 comes with a centralising gadget. Or is this another project for the lathe?
If a lathe is available, why not machine a disc with an OD equal to a tight slip-fit in the ID of the bushing and an ID that's a tight slip-fit on a piece of drill rod equal to the collet ID? There are a couple of sources offering something similar except the OD of the disc fits in the c'bore of the baseplate that accepts the flange of the PC guide bushing.

Tom
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