Has anyone actually made one yet. I spoke to a machine shop that is willing to custom make me an extension so I can just go a bit deeper. I'm imagining just a female to screw on the machine and a short shank to fit the df700 bits. I'm not really looking to go crazy and burn out my df500. I just want to make the deepest 10mm domino I can get. I would first mortise out all my holes with the 10mm df500 and then go back and deepen my cut with the extension. I know there will be some fine tuning but it's totally doable at least in my mind. I am hoping one of you has done this already. I know I can use a forstner and finish it on my drill press and a chisel but I really want the extension piece. Thanks
Domino Df500 extension
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Birdhunter
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I would guess extending the "throw" of a 500 bit would be grounds for voiding the warranty. The company could argue that cutting a wider and deeper mortise than machine is designed to do isn't covered by the warranty.
A $1300 solution they do have but not worth the investment for me. I did feel that increasing the throw would increase the mortise width but the first cur would still be tight and a little extra glue mixed with sawdust would solve that problem. Why do you feel it would void the warranty? The machine would not experience a major difference in the load since your boring with the standard bit for the first half of the mortise
Omar157 said:
If I were using an "extender," I'd use a gap filling glue (epoxy?). As regards the warranty issue, if a DF broke because of using an extender, Festool might (or might not) be able to tell and consider the damage outside the warranty coverage.
On the $1,300 question, if I have plans to do big joinery projects often which I don't (have done only two since I bought my DF500), I would invest in an XL without a second thought. The next time I need another 80mm tenon joint could be years (if not a decade) down the road, which can be resolved with drilling.
Money aside, I do not want to see a tool sitting and taking up valuable space in my shop unused for years -- a general guideline I follow to decide if a tool should go home with me (that's why I sold the bench mortising machine, Leigh dovetail jig, etc. which were rarely used after acquisition).
Birdhunter
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If you increase the length of the cutter, you increase the arc the cutter traverses and thus the moment arm. Increasing the moment arm increases the force the motor and the transmission has to exert to move the cutter. Increased force equals increased stress.
Festool could/might argue that the machine was not designed to endure the increased stress.
I am not saying the machine would break or that Festool would not honor the warranty, just exposing the possibility.
Festool could/might argue that the machine was not designed to endure the increased stress.
I am not saying the machine would break or that Festool would not honor the warranty, just exposing the possibility.
Sorry - old, but wondering - for those folks that have used a drill to elongate (deeper for longer domino) - what kind of setup did you use? I have a DR 500, want to use a 10x100 domino (so at 28 plunge on both cuts, I'll be short 44mm) to attach bread boards to a table top. Thanks for your thoughts.
I would venture to guess it would probably be against their blessings?
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Hi [member=60957]Omar157[/member]
Forgive me being blunt but I think that it is a bad idea to do this....
- First, as someone above has said, the machine is not designed for the extra stress/torque etc.
- Second, with an extension on the end of the cutter may well be sticking out into the cutting area even before a plunge.
If, for those odd occasions when you want to deepen a slot, you simply take out a (presumably) 10 mm drill to do the round ends of the slot and a chisel for in between this might save some money in the long run.
If you need to do this often because you are running a business or making money from your work then buy the DF700.
Peter
Forgive me being blunt but I think that it is a bad idea to do this....
- First, as someone above has said, the machine is not designed for the extra stress/torque etc.
- Second, with an extension on the end of the cutter may well be sticking out into the cutting area even before a plunge.
If, for those odd occasions when you want to deepen a slot, you simply take out a (presumably) 10 mm drill to do the round ends of the slot and a chisel for in between this might save some money in the long run.
If you need to do this often because you are running a business or making money from your work then buy the DF700.
Peter
It's all speculation here whether an extender would cause damage to the machine. There're only two ways to find out: a) Have someone with the engineering skill and knowledge of the machine do some calculations, b) Make an extender and try it out with different kinds of wood. The best method is to complete step a), and then b).
The OP's approach sounds safe to me, depending on how much deeper he has in mind: "I would first mortise out all my holes with the 10mm df500 and then go back and deepen my cut with the extension." I don't expect that the machine would break down if only a small amount of material is removed after the first plunge. How small is small? That's the question that matters.
As for the bit sticking out, it again depends on how much deeper we're talking about. It's not a safety issue if the bit is sticking out several mm only because before the machine is turned on, the bit should already be inside the predrilled mortise.
Who knows? May be if someone (Seneca?) is willing to do some R&D and look into the OP's idea, a new accessory could be born. Of course, the use of any non-Festool accessories is not condoned by Festool, including the adapters some XL owners use with the DF500 cutters. By the way, the Seneca adapters would not have been developed and made available if they thought inside the box.
The OP's approach sounds safe to me, depending on how much deeper he has in mind: "I would first mortise out all my holes with the 10mm df500 and then go back and deepen my cut with the extension." I don't expect that the machine would break down if only a small amount of material is removed after the first plunge. How small is small? That's the question that matters.
As for the bit sticking out, it again depends on how much deeper we're talking about. It's not a safety issue if the bit is sticking out several mm only because before the machine is turned on, the bit should already be inside the predrilled mortise.
Who knows? May be if someone (Seneca?) is willing to do some R&D and look into the OP's idea, a new accessory could be born. Of course, the use of any non-Festool accessories is not condoned by Festool, including the adapters some XL owners use with the DF500 cutters. By the way, the Seneca adapters would not have been developed and made available if they thought inside the box.
Michael Kellough
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"I would first mortise out all my holes with the 10mm df500 and then go back and deepen my cut with the extension."
That might work provided the initial mortise is made at the wide setting and the deeper mortise is made with a a narrower setting.
That might work provided the initial mortise is made at the wide setting and the deeper mortise is made with a a narrower setting.
