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Tap & die sets

dnail

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Jan 16, 2011
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4
What should I be looking for in a decent tap and die set? Material? Vendor?
Thanks. D.
 
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NJ Diver

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Apr 25, 2010
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92
There have been several recent discussions on this topic over the last few weeks. The search feature should bring up tons on this topic.
 
OP
D

dnail

New member
Joined
Jan 16, 2011
Messages
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Hmmm. Did a search and nothing comes up. What search terms did you use?
 

W650Mike

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Dec 17, 2010
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Location
North Central Texas
Dnail,
I have an older Craftsman set bought complete from a pawn shop. It's a big set with everything from pitch gauges, inch and metric, to several NPT taps; it had little if any use. I’ve proceeded to damage and replace several small taps but only due to my fault. I’m a DIYer but the set still sees a fair amount of use.

For some reason, pawnshops always seem to have quite a few name brand sets. I recently picked up a Snap-on Re-thread set for $50.

...and welcome to the site!
 
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richfinn

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Jan 29, 2011
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Location
Leeds, Yorkshire, England
I find the sets a bit poor (even the snap on). Ive got about 5 metric taps/good quality hex dies and a few tap sockets etc and a good metric thread file that does everything I need.
 

HandyManny

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Mar 13, 2009
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Location
Out West
High speed steel is much better than carbon steel.
Harder to break and stay sharp longer.

High speed steels are a type carbon tool steel. I would not go with a high speed steel in a tap & die set. Go with a set made out of a forge die steel like D-1 or something. In fact most die makers know what's the best steel to use for that stuff

If you were talking bandsaw blades or cut-off blades then I'd recommend a high speed steel for those. High Speed steel is alloyed to be more resistant to wear under high heat. A manual tap or die does not require such characteristics.
 

bobcatdan

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Jan 4, 2011
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Location
Kaukauna,WI
Any common sets that are US made will be irwin (don't how long if not already overseas) and Vermont American. Any better has to sourced from a jobber for something for industrial use. Irwin makes the kits for Snap on, Matco and Mac. The tool guys will replace brokens, I don't know if an Irwin set is warrantied. I have a Snap on set and it is just fine for the work I do. I have a Craftsman set at home which I'm pretty sure is VA. Those break way too easy and last time I tried, not warrantied. Tap and diesyou get what you pay for and removing a broken tap *****. Wilton or Walton ( I don't remember) makes a broken tap remover that works pretty good.
 

yaidunno

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Feb 10, 2011
Messages
1,336
Location
WI
I just picked up a 76 piece Irwin set. Everything is still made in the US. I didnt see a point in getting the same set from one of the big 3 for warranty purposes when i can go just about anywhere and get a replacement for $5.

I think they are a real good general purpose set for the money. For special jobs, or special sizes, professional tooling will have to be used but these work great for every day use.
 

Cougar

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Mar 22, 2011
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Wisconsin A little south of the Frozen Tundra
High speed steels are a type carbon tool steel. I would not go with a high speed steel in a tap & die set. Go with a set made out of a forge die steel like D-1 or something. In fact most die makers know what's the best steel to use for that stuff

If you were talking bandsaw blades or cut-off blades then I'd recommend a high speed steel for those. High Speed steel is alloyed to be more resistant to wear under high heat. A manual tap or die does not require such characteristics.

I like the high speed steel ones because I don't think they break or chip as easy as the carbon steel. I know they're not the best but, for around the home shop they should last a long time.


Tap Material
High Speed Steel
Most common tap material. Well suited for a variety of applications.

Vanadium Steel
Superior performance compared to high-speed steel taps. Great for materials up to Rockwell hardness C30. Available with a wide variety of coatings. Great for alloy steels, stainless steels, malleable irons, hard plastics, fiberglass, and aluminum.

Cobalt Steel
Harder, more abrasion resistant, longer wearing, and superior in overall performance to high-speed steel taps. Excellent for materials up to Rockwell hardness C32, such as alloy steels, tool steels, malleable iron, aluminum, brass, copper, and zinc.

Cobalt Vanadium Steel
Vanadium and cobalt provide highest level of performance. For materials between Rockwell hardness C30 and C40. Use on hardened steels, stainless steels, mold and tool steels, and nickel alloys.

Carbide
Outlasts other taps, especially on highly abrasive materials such as cast iron and aluminum. Excellent for cast brass, cobalt chrome alloys, copper and copper alloys, fiberglass, and soft plastics.

Carbon Steel
Lowest initial cost, but not as accurate and do not last as long as high-speed steel taps.
 

HandyManny

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Mar 13, 2009
Messages
2,239
Location
Out West
I like the high speed steel ones because I don't think they break or chip as easy as the carbon steel. I know they're not the best but, for around the home shop they should last a long time.


Tap Material
High Speed Steel
Most common tap material. Well suited for a variety of applications.

Vanadium Steel
Superior performance compared to high-speed steel taps. Great for materials up to Rockwell hardness C30. Available with a wide variety of coatings. Great for alloy steels, stainless steels, malleable irons, hard plastics, fiberglass, and aluminum.

Cobalt Steel
Harder, more abrasion resistant, longer wearing, and superior in overall performance to high-speed steel taps. Excellent for materials up to Rockwell hardness C32, such as alloy steels, tool steels, malleable iron, aluminum, brass, copper, and zinc.

Cobalt Vanadium Steel
Vanadium and cobalt provide highest level of performance. For materials between Rockwell hardness C30 and C40. Use on hardened steels, stainless steels, mold and tool steels, and nickel alloys.

Carbide
Outlasts other taps, especially on highly abrasive materials such as cast iron and aluminum. Excellent for cast brass, cobalt chrome alloys, copper and copper alloys, fiberglass, and soft plastics.

Carbon Steel
Lowest initial cost, but not as accurate and do not last as long as high-speed steel taps.

They should last you a long time even working in a professional shop. I suppose if they were being used stricklty to thread holes all day long in a shop that threaded holes you'd probably want carbides.
 

ptschram

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Joined
Sep 8, 2006
Messages
2,573
Location
Churubusco, IN
Don't buy a set, buy a set of three for each size you need. I know many are critical of Enco, but they offer sets with taper, plug, bottom taps and tap drills. Add the die and you're all set. Unless you're doing a lot of fabrication, you're likely going to find that you only use a few taps (same with drill bits).

If you want a big set, buy a big set, but if you're gonna use them, buy the ones you need.

I used to try to fill my drill bit index with every size, then I realized I was probably better off buying really god 1/8", 1/4", 5/16", 3/8" drill bits and cheapies for the other sizes, once I get the pilot hole drilled, I can use a cheapie to step-up.

It took going to work as a real machinist in a production shop to learn that sometimes you really only do need certain sizes of tools.
 
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