sploo said:
For the DF-500 owners - ignoring the 8 and 10mm bits (which the DF-700 also has) do you find yourself using the 4, 5, or 6mm bit more often? I think I'd definitely get the 6mm, as it could be useful for mortising long 6mm slots for making jigs (I tend to use a lot of 6mm machine screws for jigs). I'm just wondering how often you really need the 5 and 4mm bits - i.e. can you get away with 6mm tenons for edge joints in 12mm ply?
I have actually used the 4mm Bit/Dominos quite a lot. I have used them to fix the back of drawers (in 10mm material), small face frames (again in 10mm material) and for small picture frames. It was the bit I checked first with the Seneca Adapter, as if I could not use that as required I would have had to keep the DF500 as well as the bigger machine. Fortunately it worked well so had no qualms about losing the DF500. I would also not discount the 5mm size as it is the recommended sized Domino for 3/4" stock as opposed to the traditional 6mm.
Don't get me wrong, there is a work-around that need to be taken into account when using the 4mm cutter on the DF700XL/Seneca adapter in thin material, you either have to make a small collar to prevent the plunge action going too deep or use a shim between the face of the machine and the work (this is also the case if you want to only plunge say 7mm into 10mm thick stock even when using the DF500). I have used both methods and both work okay with little issue.
From my own perception and with the benefit of hindsight, I would have been better off buying the DF700XL from the beginning along with all three systainers of Bits/Dominos (4-10mm, 8/10mm & 12/14mm) along with the Seneca Adapter. This is because having both allowed me to try them out in similar materials 3/4 ply, Iroko, Beech and Pine and I found that I preferred the ergonomics of the bigger machine along with the push in pins for registration, but then, I am not making 100s of cuts on a daily basis so the weight issue did not have a bearing for me and the option for bigger and deeper joints when I need them sealed it for me.
Cost is a major factor, from FFX the DF700XL is £768 with the 3x systainers running at £106, £120 and £136 plus Circa £100 for the Seneca adapter and Domishims totalling £1220, a not insignificant outlay.
The DF500 on the other hand is £567 and 4/10mm Systainer is £136 giving a total of £698.50 (with postage discount) so more than £500 less.
Neither of the above outfits include the Cross stop, Trim Stop or Handrail Fence which would cost an additional circa £100 (fit both DF500 or DF700XL.
Just so you know though, buying the DF500 kit from FFX (includes cross stop and trim stop) is £635 whilst buying them all from FFX separately costs £627.50 (including postage discounts)
From Powertool Supplies the costs are similar give or take a few £10s.