20mm Router Bits

[emlclcy]

I found a HSS spiral bit 490951 that Amazon would get me from AU. Also using it with a 1010 on an LR32 with a rail square. The holes measure a tight 19.8mm. The only Festool dogs I've got are the clamping elements and they snap right in.

i wonder what its life span is being HSS?

 

[Cheese]

Like rst, I've used the Festool 491072. It has carbide cutters and produces a clean hole. The cutting geometry is specifically designed to be used in a router at 10,000 to 14,000 rpm.

 

[Imemiter]

i wonder what its life span is being HSS?

Seems to be doing okay after 60ish holes in 3/4 MDO. But I don't expect it to last like carbide.

 

[RobS888]

I used this Bosch, some burning of the MDF, but the bit was ok.
https://smile.amazon.com/gp/product/B000AS327K/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

[Touargei]

I found that using the festool bit in trend jig quickly led to errors as there is too much slop in the holes, then tried parf system and almost opposite problem, holes are so snug that some of them need hammering! but this was also because many were off 90 vertically and so unusable for larger height dogs.

Just tried bosch straight bit and while it could be a *teeny* bit tighter than festool it is still larger than ideal, aside from jig accuracy I’d also like dogs not to slip through holes unless tightened, like my small festool style cnc made ones do.

Anyone try CMT K911-200 or have a recommendation? Limited to max 8mm shaft on of1010 so not as many options.

 

[Crazyraceguy]

I found that using the festool bit in trend jig quickly led to errors as there is too much slop in the holes, then tried parf system and almost opposite problem, holes are so snug that some of them need hammering! but this was also because many were off 90 vertically and so unusable for larger height dogs.

How did you get holes that were not perpendicular to the top? The Parf guide system should eliminate that possibility.

 

[Touargei]

I found that using the festool bit in trend jig quickly led to errors as there is too much slop in the holes, then tried parf system and almost opposite problem, holes are so snug that some of them need hammering! but this was also because many were off 90 vertically and so unusable for larger height dogs.

How did you get holes that were not perpendicular to the top? The Parf guide system should eliminate that possibility.

Not positive but I think the pull of the drill battery along with using pecking action without first pressing the bit into the guidance hole can cause drift, also there is a tiny bit of play in the guide (at least in mine). I did try changing technique but those holes weren’t uniform enough either, have seen reviews mentioning it so perhaps some guides don’t have tight enough holes.