1.252 REAMER

[Rotary Ninja]

Anyone know where we can find one?

[Thoob]

Get a 1-1/4 with the adjustable screw underneath. We have a crapload of these type.

[TK-32™]

how deep are you going?

[Rotary Ninja]

[romeo123400]

Same place you can get light bulbs, McMaster Carr

[Rotary Ninja]

Really? You had to get on the internet and tell me that? I'm throwing a 1/2-13 nut at you...

 

 

 

 

now

[The_kid]

We use western tool and supply. not sure if they service your part of the country.

[Brando]

Anyone know where we can find one?

 

hannibal carbide tool prob has one on the shelf

 

http://www.hannibalcarbide.com/documents/hannibal-carbide-tool-2011-catalog.pdf

[Guyinthedesert]

Anyone know where we can find one?

 

You can buy an unfinished reamer, and grind it to whatever size you want

[Rotary Ninja]

I thought of buying a bigger one but our grinding department consists of a worn out surface grinder and an indexer than is too small to hold a reamer of that size.

[The_kid]

might see if A&B tool has one or can grind one. I've used a lot custom stuff from them.

[mkd]

well, an adjustable reamer is out due to the blind hole.

why not just bore it?

 

if you want a super finish and adjustable size control imbuing the part with wear and corrosion resistance try a cogsdill burnishing tool after boring.

edit: burnishing tool would be over $500. sounds expensive, but for the right job/customer it could be the cheapest and highest quality solution. could beat extra hone processing at outside vendor etc.

[Rotary Ninja]

For right now I have to make 4 parts. There are two different parts and I have to make a right and left of each. The part you are not seeing is 2 inches longer, which would require an 8" long boring bar. Plus it has a flange that sticks out about mid-way between the end of the part and the bore. The edge of that flange is nearly flush with the edge of this 1.252" bore. If we get into production these will need something a little more repeatable than a boring bar sticking out 8". I have a 1.250" reamer. The first 4 are non-anodize. The rest have to be hard anodize. So I am hoping we can get the 1.250" reamer to cut a little big for these first parts. But being 7075 I highly doubt it will even cut as big as 1.250" LOL. My tolerance is 1.250" +.002"/-.000" ( I think ). So I am betting a custom ground reamer is going to be my only option.

[gms1]

The length is the killer on that one. MSC has off the shelf 6" long reamers.To bad you can't squeeze a small diameter collet holder in there with it.

[Thoob]

well, an adjustable reamer is out due to the blind hole.

 

Why can't you use it in a blind hole? The adjustable flares out the bottom of the reamer does it not?

[mkd]

well, an adjustable reamer is out due to the blind hole.

why not just bore it?

 

if you want a super finish and adjustable size control imbuing the part with wear and corrosion resistance try a cogsdill burnishing tool after boring.

Why can't you use it in a blind hole? The adjustable flares out the bottom of the reamer does it not?

i was thinking of the type with the adjustment screw hanging out the bottom, i guess there is the type with an internal socket screw...my bad.

[mkd]

For right now I have to make 4 parts. There are two different parts and I have to make a right and left of each. The part you are not seeing is 2 inches longer, which would require an 8" long boring bar. ...... But being 7075 I highly doubt it will even cut as big as 1.250" LOL. My tolerance is 1.250" +.002"/-.000" ( I think ). So I am betting a custom ground reamer is going to be my only option.

have no fear, i use an 8 incher daily.

[LancoUSA]

We have seco boring heads here that have modular parts to adjust the length of. Seco also has the Precifix line which looks like a good route too. It is in their holemaking book page 304

[Müřlıń®]

Stick a piece of. 001 shim in the collet....

 

A reamer that big will act like a boating bar if it runs out specially in aluminum.

[Chris Rizzo]

Ghetto solution. But does work. Take a 1.251, and with chunk of carbide run it hard along one flute to raise a burr.

[Rotary Ninja]

Hehe. Ghetto is right. This old fart I used to work with told me that same thing Chris. I will manage somehow. If nothing else I will hone it to size

 

[MoMo1108]

whats your tol. and finish specs .... use and osg sus drill they cut right to size and come in standrd and metric so you can get close to your dia with in a few 10ths i have used these alott there pricey but what isnt