View Full Version : Reamers

03-02-2003, 05:10 PM
Where can I get custom sizes of reamers, I need .355 and .356. Maybe some others.


Al Messer
03-02-2003, 05:51 PM
If you don't have a lot of holes to ream, make "D bits" yourself out of drill rod and harden and temper them with a propane torch.

03-02-2003, 06:13 PM
MSC www.mscdirect.com (http://www.mscdirect.com) , Travers www.travers.com (http://www.travers.com) , and others sell decimal-size reamers in a host of sizes. Get a catalog (free) and see what they have.

03-02-2003, 06:28 PM
Why not use an ajustable reamer?


03-02-2003, 06:44 PM
I never thought about an adjustable reamer, but this is for use on 4140 steel, most likely hardened.


Forrest Addy
03-02-2003, 06:58 PM
How about metric reamers

9.00 mm (0.3543")

9.05 mm (0.3563")

Cold Rolled
03-02-2003, 09:56 PM
I have just got some reamers from http://www.mscdirect.com/. I would recommend them. They where fast and had reasonable prices. My order came the next day regular ground.

03-02-2003, 11:28 PM
Try Grand tool. Their catalog has much more than their website. They carry a lot of hard to find items.
WWW.grandtool.com (http://WWW.grandtool.com)

03-03-2003, 12:10 AM
I requested the catalog from Grand Tools, I need a bigger monitor some of the stuff that Grand, and MSC list on their website is too hard to read.


03-03-2003, 12:44 AM
That's because they just scanned in catalog pages. They have too many items to input one at a time. They will probably improve the website eventually.

John Stevenson
03-03-2003, 04:09 AM
<font face="Verdana, Arial" size="2">Originally posted by jfsmith:
I never thought about an adjustable reamer, but this is for use on 4140 steel, most likely hardened.


All the regular custom sized reamers that move up in thous are just HSS steel and will not do hardened steel. You will just wreck the reamer on it's first hole
Carbide tipped reamers are available but at a premium.
If your material is already hardened perhaps a relook at your problem is in order.

Not knowing your problem perhaps honing or lapping might work.
As Forrest has stated it's close to 9mm. If this is a firearm application how about looking at some of the gun trade tooling peoples wares ?

John S.

03-03-2003, 05:26 PM
Reamers can be re-sized fairly easily.Take a piece of brass about 1/2 thick and ream a hole in it.Cut a slot through to the hole.Chuck up reamer and spin it in reverse.Apply fine lapping compound to hole in brass piece.Use a clamp or drill and tap a hole to adjust size.CHECK DIA.FREQUENTLY.I have used this method to resize numerous reamers,taking off as little as .0005 and as much as .005.


Dr. Rob
03-03-2003, 07:23 PM
Now THAT was a good trick, Burnlast. I'll remember that one when the time comes, I hope.

03-03-2003, 08:16 PM
Is the 4140 steel heat treated or hardened? If its heat treated to about 54 RwC or less the HSS reamer should cut it. UDA. If its hardened (hit it w/a small rat tailed file to know for sure) then you are SOL. Sorta Outa Luck! Time to drag out the some type of lapping tool to finish the job.

03-03-2003, 09:46 PM
LOL Burnlast. I didn't know anyone else knew that trick. My grandfather taught it to me many years ago, but he used hardwood blocks. It also improves the finish in the hole.

03-03-2003, 09:59 PM
I am going to try the resizing method. This is hardened steel, when I have done things like this before I generally have used carbide tiped stuff. This time I am just trying to get a clean round hole.

Many thanks for the advice.

Mike Burdick
03-04-2003, 11:39 AM

KBC sells the reamers your want.

Here are the part numbers for a USA made HSS reamer:

5-018-3550 for the 0.3550" $14.72
5-018-3560 for the 0.3560" $14.72


[This message has been edited by Mike Burdick (edited 03-04-2003).]

03-04-2003, 01:26 PM
I just talked to KBC and they are shipping me the reamers. Plus they shipping me some free drill bits. Great place to deal with so far.


Mike Burdick
03-04-2003, 02:02 PM

KBC has been pretty good to me. If I don't order from them in a while they send me a letter saying that they will take 10% (or sometimes 20%) off my next order. I once bought a Bison Adjust-Tru chuck from them and they met Enco's 20% off sales price and also honored the 20% off from the letter, PLUS free shipping! How's that for making a customer feel wanted.

I'm just a very small buyer(hobbyist).....imagine how they must treat the "big" boys.


03-06-2003, 02:55 AM

Yeah, I gotten screwed every time I have ordered anything from them. I buy local if I can - I use their "flyers" to get better deals. "You bastard, even KBC is cheaper than THAT!" - works every time. http://bbs.homeshopmachinist.net//biggrin.gif