Super thin titanium rudder blades.

[BobHorowitz]

Guys ,

I did some quick checking about coolant passage carbide drills. I'll have to call one of the reps that calls on my shop for the really small ones. With a quick check I found drills down to .118(3mm), that will drill 40x dia., 105mm flute length, 150mm oa. They are made by OSG, part#8567130. They do have coolant passages. I'll make some calls, I'm pretty sure one of my reps said he's got them down to 3/64", I'm just not sure of the length. I'll follow up, and post more info as I get it. Terry, I hope this helps. They also make hole drilling EDM machines that would do the job, they can go way smaller than you want. My company makes dental instruments, and we already get some stuff done. If you want, I could probably hook you up with a shop that does that kind of work. We don't do it in house.

Regards,

Bob

 

[Charles Perdue]

After a bunch of testing I got a process down that ended up drilling the hole straight to a couple thou!

Testing is over!!!

It took me a while but I finally figured out how Terry post his photos taken in such a clean shop.

He has 2 shops. One for working in and another for taking photos in.

You are slick.

Charles

 

[Terry Keeley]

Guys ,

I did some quick checking about coolant passage carbide drills. I'll have to call one of the reps that calls on my shop for the really small ones. With a quick check I found drills down to .118(3mm), that will drill 40x dia., 105mm flute length, 150mm oa. They are made by OSG, part#8567130. They do have coolant passages. I'll make some calls, I'm pretty sure one of my reps said he's got them down to 3/64", I'm just not sure of the length. I'll follow up, and post more info as I get it. Terry, I hope this helps. They also make hole drilling EDM machines that would do the job, they can go way smaller than you want. My company makes dental instruments, and we already get some stuff done. If you want, I could probably hook you up with a shop that does that kind of work. We don't do it in house.

Regards,

Bob

Thanks Bob, I found Guhring makes 3 mm through coolant drills too but nothing smaller.

It took me a while but I finally figured out how Terry post his photos taken in such a clean shop.

He has 2 shops. One for working in and another for taking photos in.

You are slick.

Charles

Slick or just sick?

 

[BobHorowitz]

Terry,

How small do you want to go?

Bob

 

[Terry Keeley]

Terry,

How small do you want to go?

Bob

1/16 or 3/64?

 

[Hydro Junkie]

Will going that small give you enough water flow to keep everything cool

 

[Terry Keeley]

Will going that small give you enough water flow to keep everything cool

Way more than enough for nitro motors, still restricting it from there.

Most guys run way too much cooling IMHO, cutting the water down and opening the needle makes more power and the motors are happier for it!

 

[BobHorowitz]

I'll see what I can find.

Bob

 

[BobHorowitz]

Terry,

Try Regal cutting tools. They have aircraft extension drills in cobalt down to 1/16.

Bob

 

[Terry Keeley]

Terry,

Try Regal cutting tools. They have aircraft extension drills in cobalt down to 1/16.

Bob

Yup, what I found also...

 

[Terry Keeley]

Now I get to see how straight my holes really are...

 

[dave roach]

Terry

If you get then with in .0005 you doing good.LOL

 

[Terry Keeley]

Haven't drilled the coolant hole for the two small ones yet, still trying to drill a 3/64" hole.

 

[BobHorowitz]

Terry,

I,d love to see your setup for putting the angles on the rudder blades.

Bob

 

[Terry Keeley]

Terry,

I,d love to see your setup for putting the angles on the rudder blades.

Bob

NP. Will post some pics when I get to it...

 

[BobHorowitz]

Thanks Terry

 

[Steve Seebold]

Terry

Your lathe is so clean do you ever use it.LOL A clean machine is not making any money.

Just a stock photo but I havta admit mine's almost that bad...

I used to have a lathe like that one. It was one bitchin little machine.

 

[Jerry Betke]

Hi Terry, Get with Bill Cummings on how to drill straight holes. He made a lot of rudder blades for us back in th 90's when we were selling them.I think you have his phone or e-mail address from your time trial days. JB

 

[Terry Keeley]

Hi Terry, Get with Bill Cummings on how to drill straight holes. He made a lot of rudder blades for us back in th 90's when we were selling them.I think you have his phone or e-mail address from your time trial days. JB

Thanks Jerry, Bill is a very talented toolmaker for sure!

 

[Terry Keeley]

Got all the holes done. Used a 3/64" drill on the little guy, did it in the mill for better feel, cheated a bit as I went in from each end and going to plug the hole at the bottom. Broke a drill off inside one of them and was lucky to find a shop to EDM it out cheap.

Ended up sharpening another 3/64 bit and splitting the point on my drill grinder to get it done!