How to get index pin holes drilled in slider saw blades? (especially dado blades)

For those of you who have euro sliders with the index pins on the arbor, how do you go about getting holes bored in blades (if you didn't purchase a blade that was manufactured as such)? I assume you can't do it yourself on a drill press (it would have to be pretty precise to avoid unbalancing?).

I was trying to buy a 6" dado set for my Hammer C3-31, and wanted the Infinity Dadonator (which can be ordered with a 30mm arbor for $250), but Infinity can't drill the index pin holes. The Forrest Dado King comes with the holes, but is much more expensive (~$400). The Felder adjustable slot cutter looks nice, but is even more expensive, still (~$500).

Second question: are the holes drilled through each chipper blade, as well?

Dan, any good saw specialist should be able to do this for a regular blade and/or dado set - try someone like Ridge Carbide, Amana, Carbide Processors or Dynamic Saw Inc to name a few. I've also purchased a regular FS sawblade that required pin holes drilling by them and it took about a week extra to deliver. Upcharge was $12 for a $160 blade. Distributor was Ballewsaw

Does Forrest not offer the blade drilling service any longer?

Erik

Dan - take them to vexor in north Denver on Washington, just north of us 36- they can put a 30 mm bore in the blades and bore the two pin holes. I have used them for some blades for my hammer and they have done a great job

John

I apparently need to update my location, John - your answer would have been perfect a few months ago (when I lived in Denver), but am now in Minneapolis.


Ok, so it sounds like I buy the Dadonator and ship it somewhere to have it drilled. Thanks, guys! I don't see that service listed on Forrest's menu, but I'll call and ask...

Dan, you might want to check with some of the suppliers I listed as they also make their own Dado sets and it could be cheaper/less of a pain than shipping an Infinity around

Anyone checked with Carbide Processors lately? Last time I called, they did not offer a dado drilled for the Hammer saws.

Thanks, Andy - I'll give that a try, too. That Felder slot adjustable slot cutter is looking very nice, though :)

I have the Felder slot cutter set (smaller diameter) and it does produce an excellent finish, Dan. Easy to dial in the right width of slot as well

Yes Dan, a tooling manufacturer can drill the holes, I have an FS Tools dado set for mine.

Yes the chippers are drilled, in a pattern that staggers them around the assembly..............regards, Rod.

Awww c'mon, guys! Dan ... if you already have a blade with that hole pattern ... you've got a 'template'.
Pin-the center hole ... 2x side tape the blades together ... drill.

Quote:

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Originally Posted by Sam Puhalovich

Awww c'mon, guys! Dan ... if you already have a blade with that hole pattern ... you've got a 'template'.
Pin-the center hole ... 2x side tape the blades together ... drill.

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....will that work? Is the steel too hard for "regular" bits or anything?

Otherwise, seems doable...

I've drilled hardened steel with regular high speed steel drill bits. It takes a long time and like any metal you need to turn the speed down on your drill press so you don't cook your bits. Also too... LOTS of oil to help with cutting and cooling.

I would just do it myself for the pin holes. If the center hole needed to be changed I'd go to my machinist friend who is retired, bored, always looking for something to do and never charges me unless I make him because he shouldn't be working for free on real jobs - even for friends.

Update:

The Hammer adjustable slot cutter only goes down to ~0.3", which obviously won't work for 1/4" groves, so I think it won't work (for me) (plus it's >$700).

Forrest sells a 6" Dado King with the correct bore and pin holes, but it's $390 and their site presently notes that there may be a shipping delay due to high order volume.

Infinity sells a 6" Dadonator Jr with the correct bore, but no pin holes (and they can't drill the pin holes).

Ridge Carbide sells a Dado Master with the correct bore, but no pin holes. They said they'd be getting some with pin holes later this fall.

So the only options are the Dado King or having a blade modified.


In terms of modification:
Forrest says they no longer drill holes in other manufacturers' blades
Dynamic Saw said they could re-bore and drill pin holes
Vexar said they could re-bore and drill pin holes

Both Dynamic Saw and Vexar were quoting ~$20 per blade (or $160 for a full dado stack). With shipping, seems like it'll be about the same price to buy a Dado King or get one of the others drilled.

Anyhow - hope this is useful to anyone else looking for a euro-compatible dado stack.

Dan, try FS Tools, that's the set I have............Regards, Rod.