Hand Countersinks

[kruegdr]

What do you guys do for hand countersinks? (Sheet metal work, deburring/light chamfering, etc)

I am putting together my upcoming McMaster order and noticed that they don't seem to carry countersinks like this : http://www.victornet.com/report/General-Hand-Held-Countersink/1867.html

I've got a few loose countersink bits like what they show on McMasters website, but I couldn't find any general purpose handles that might be used for the bits in question.

So, do you guys use the one off countersinks like in the link above, or do you have some kind of multipurpose handle (maybe with a set screw) that can take the loose countersink bit?

 

[lalaland]

Whatever works dude.

 

[Stick Figure]

Depending on the size, a pin vise will work

 

[OccupantRJ]

I use a battery drill at slow speed, or either offhand deburr using a countersink in the drill press. If also drilling a hole, I do it as part of the drilling process by changing to a countersink while the part is still lined up in the machine. You can also use a device called a Burr-bit to drill and deburr in one shot.

http://www.vernondevices.com/products.htm

For hand deburring, you can also use one of these.

http://www.acehardwareoutlet.com/productdetails.aspx?sku=998012283&source=GoogleBase

 

[A_Pmech]

For just a few holes I put the countersink in a small jacobs chuck with a handle I made.

For more than a few holes, the countersink goes in a drill.

 

[Stephenw]

For general countersinking, I just use a 60 degree countersink in a battery powered drill.

For deburring, I like the Noga Teddy Burr. It has a painted aluminum body and accepts type N blades.

 

[bna doug]

For all your countersinking needs

http://www.aircraftspruce.com/menus/to/countersinks.html

 

[Yojinbo]

I have ordered from aircraftspruce before all experiences were very GOOD experiences.

 

[OccupantRJ]

For all your countersinking needs

http://www.aircraftspruce.com/menus/to/countersinks.html

A friend blessed me with a free setup of those years back. They are indeed nice if you want precise c-sinks.

 

[Keep]

So its a bad thing to just use the 3/4 drill bit as a countersink?

 

[t100]

it depends how much you use it. I use hand driven countersink a lot at the shop, let me tell you, a ratchet countersink is a huge improvement.

my boss has one similar to in the picture below only it's all metal bout 20 years old

I was making this thing sunday afternoon, I wouldn't use anything else to finish the holes.

http://www.garagejournal.com/forum/showthread.php?t=86282

 

[Brad54]

What do you guys do for hand countersinks? (Sheet metal work, deburring/light chamfering, etc)

I am putting together my upcoming McMaster order and noticed that they don't seem to carry countersinks like this : http://www.victornet.com/report/General-Hand-Held-Countersink/1867.html

I've got a few loose countersink bits like what they show on McMasters website, but I couldn't find any general purpose handles that might be used for the bits in question.

So, do you guys use the one off countersinks like in the link above, or do you have some kind of multipurpose handle (maybe with a set screw) that can take the loose countersink bit?

I got an incredible tip for this from Lamar Walden Automotive in Doraville, GA: He has countersinks chucked-up permanently in antique bit-n-brace hand drills. When he gets done machining a part and wants to put a quick clean-up on the hole, he just gives it a couple cranks and it's perfect.
If the part is heavy, set the part on the desk and go to town. If it's a light part, hold it in one hand with the bit in place, put the round handle of the drill against your torso, and crank with your free hand.

I have one hanging on the wall right by my drill press. It's great.

-Brad

 

[kruegdr]

Thanks for the suggestions guys. I already have a deburring tool (for which replacement blades were ordered in the McMaster order).

Brad54, that's an excellent suggestion regarding the old hand drill. I'll have to add that to the list of things to keep an eye on at garage sales.

 

[Dog]

Those are sure handy..I could use another.

 

[larry_g]

Some of the tools I use for deburing. The two on the left are hand drills of old with a 3 jaw chuck that will hold round shank tools. The four in the middle are file handles with countersinks fitted to them and the last is a 3 cornered scraper.

lg
no neat sig line

 

[BlindViper]

http://www.frets.com/HomeShopTech/QuickTricks/HandCountersink/handcountersink.html

 

[5lima30]

I've got one buried in a toolbox somewhere? But since I now have step-bits I use those for deburring. It's just quicker than digging out the countersink IMHO.

 

[bw77]

Those are sure handy..I could use another.

Too bad the new ones are made in China.
But they kept the USA picture.

http://www.grainger.com/Grainger/GENERAL-Screwdriver-Handle-Pipe-ReamerCountersink-3ZH14?Pid=search

 

[Harvey Melvin Richards]

When I have to countersink a hole, either by hand, hand held motor, or stationary device, I reach for one of these:

 

[Kevin54]

Take almost any cheaper screwdriver handle or an old nutrunner handle, remove the blade or nutrunner, and insert the countersink into the handle. The countersinks with the 1/4" shank fit tight into a handle. I've made hundreds at work that way for the assembly departments.

On the Vargus Deburring tools, make sure that you have extra inserts for them and change them out often if you use the tool regularly. Of all the tools we have at work, the Vargus is probably the one that causes most injuries. Using the blade on aluminum, it will last for quite a while, but if you use it on steel, change it out the very first time it acts like it is not cutting well. The way the inserts are ground, where it gets to the cutting corner or edge, they will break in that area. And when they do, if you are holding a part in your hand to deburr, the force of deburring it, and combined with pulling it towards you, can cut a wrist rather severely. At our shop, we had 1-2 accidents per month that required stitches until HS&E made it a requirement to wear Kevlar sleeves.

One other thing you can look at also for the deburring inserts is that they make left handed inserts so you are pushing away instead of pulling towards you. I keep at least a dozen of each of L.H. & R.H. in my toolbox. THe blade inserts in question are what is shown in the above pic laying in the square pocket.

 

[Harvey Melvin Richards]

Take almost any cheaper screwdriver handle or an old nutrunner handle, remove the blade or nutrunner, and insert the countersink into the handle. The countersinks with the 1/4" shank fit tight into a handle. I've made hundreds at work that way for the assembly departments.

I have used inline hand countersinks, and I don't care for them. I prefer the slightly off set design for most holes.

Too much of an offset (like the holder that under the other handles) doesn't work very well either.

 

[ndoran]

deburring is not the same as countersinking, Countersinking is to allow flush fitting of a countersunk fastener. I have a couple of countersink bits - had them for more years than I can remember, I will mount them in a hand, pillar or cordless drill as required. If I just want to deburr a round hole I just twist the bit in the hole three our four times using my fingers.

 

[Harvey Melvin Richards]

If I just want to deburr a round hole I just twist the bit in the hole three our four times using my fingers.

I take it you are young and/or don't have any repetitive use problems and/or have to deburr very few holes. My hands would cramp up after a couple of holes.

 

[ndoran]

I take it you are young and/or don't have any repetitive use problems and/or have to deburr very few holes. My hands would cramp up after a couple of holes.

yes I am only 52 years old. I am fortunate not to have any SI issues and I am fortunate that I do not need to deburr many holes, although I have done my share over the years. I always use a power dill for countersinking - although I have done my share of these with a brace and bit - which I still have.

Deburring is a terrible job and causes many RSI problems. I know people who do it for 40 hours every week using a microscope.

 

[Harvey Melvin Richards]

What do you guys do for hand countersinks? (Sheet metal work, deburring/light chamfering, etc)

I am putting together my upcoming McMaster order and noticed that they don't seem to carry countersinks like this : http://www.victornet.com/report/General-Hand-Held-Countersink/1867.html

I've got a few loose countersink bits like what they show on McMasters website, but I couldn't find any general purpose handles that might be used for the bits in question.

So, do you guys use the one off countersinks like in the link above, or do you have some kind of multipurpose handle (maybe with a set screw) that can take the loose countersink bit?

These large pin vises are made by Shaviv (Vargus). They will open up to 0.32" in diameter, so they will easily hold the 1/4" shank of many countersinks. They are also very useful for small drills and files. It's called a HandyChuck Pin Vise pn 29057. Noga makes a similar one called a YT Handle, pn YT1000.

McMaster has a couple large opening ones if you search for "pin vise".

 

[Coach James]

http://www.use-enco.com/CGI/INSRIT?PARTPG=INSRAR2&PMAKA=891-5434&PMPXNO=3905160

Also, how do you remove the blade from a screwdriver without destroying the handle?

Coach