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  #1  
Old 06-25-2012, 07:02 PM
RobinHou RobinHou is offline
 
Join Date: Mar 2009
Location: Pasadena, California
Posts: 214
Default Taps

I am working on my RV-7A tip-up cabin frame. I am about to order a 8-32 tap from McMaster-Carr for tapping the #8 screw holes. I am wondering if there are other sizes of tap that I may need for later part of the build? I like to order them at once if other sizes are needed.
Thanks in advance,
Robin
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  #2  
Old 06-25-2012, 07:19 PM
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Mark Burns Mark Burns is offline
 
Join Date: Jan 2005
Location: Ruston, Louisiana
Posts: 879
Default OK

I'm not saying you will need these, but they will come in handy at some point.

6-32
10-32
1/4-20
1/4-28

Mark
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  #3  
Old 06-25-2012, 07:33 PM
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Greg Arehart Greg Arehart is offline
 
Join Date: Jul 2007
Location: Delta, CO/Atlin, BC
Posts: 2,391
Default

I agree with Mark, useful to have taps for most sizes we use in building. Not a bad idea to have an extra 6-32 and 8-32 lying around in case you snap one of those as they are somewhat easy to break.

Greg
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  #4  
Old 06-25-2012, 07:35 PM
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ChiefPilot ChiefPilot is offline
 
Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 1,565
Default

Quote:
Originally Posted by RobinHou View Post
I am working on my RV-7A tip-up cabin frame. I am about to order a 8-32 tap from McMaster-Carr for tapping the #8 screw holes. I am wondering if there are other sizes of tap that I may need for later part of the build? I like to order them at once if other sizes are needed.
Thanks in advance,
Robin
I agree with Greg - I've used 6-32, 8-32, and 10-32 taps quite a bit.

I was able to find all these sizes locally at Ace Hardware, Sears, and other shops if you'd like to get them more quickly.
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  #5  
Old 06-25-2012, 07:40 PM
roee roee is offline
 
Join Date: Feb 2006
Location: San Diego, CA, U.S.A.
Posts: 770
Default

Just FYI, you can buy taps in most common sizes at Home Depot. Quicker and probably less expensive than ordering from McMaster-Carr.
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  #6  
Old 06-25-2012, 07:52 PM
868RM 868RM is offline
 
Join Date: Oct 2009
Location: lena, il.
Posts: 305
Default taps

I use only 2 flute taps for hand tapping. Less likely to brake. M- carr has them. My thoughts. Ron Broken taps suck.
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  #7  
Old 06-25-2012, 07:58 PM
CMW CMW is offline
 
Join Date: Mar 2007
Location: Livermore, CA
Posts: 167
Default Enco

An alternate to Mcmaster is Enco. I order all my machining supplies from them. Cheaper than Mcmaster and pretty good quality. They have extremely fast shipping.

http://www.use-enco.com/CGI/INDRVSH
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  #8  
Old 06-25-2012, 08:38 PM
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frazitl frazitl is offline
 
Join Date: Jan 2005
Location: Las Vegas, NV
Posts: 488
Default Be sure to buy the proper

tap drill and clearance drill sizes for the common size taps if you don't have a complete number drill set. I ended up using both quite a lot. Go for the complete set if you can. Harbor Freight has good enough tools for most applications. You might want a few high quality drills for the firewall, 4130 steel weldments, etc. Carbide or Cobalt works great
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  #9  
Old 06-25-2012, 09:07 PM
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clevtool clevtool is offline
 
Join Date: May 2006
Location: Boone, Iowa
Posts: 342
Default

Most local stores have them, but if you are going to order them keep us in mind.
http://www.cleavelandtoolstore.com/p...asp?number=TAP
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  #10  
Old 06-26-2012, 08:41 AM
wm708 wm708 is offline
 
Join Date: Dec 2007
Location: houston pmt 2014
Posts: 53
Default THREAD FORMING - flutelesss

This is not a cutting tap.
Works very good for thin metal sheets. Stronger thread, fast, no chips. ... Need more torque to turn.
Practice on junk pcs to get the hang of it.

You can use a reversing drill. Use lubricating oil not cutting oil 3and1 ok.
Drill size is not the same as a cut tap drill.

Bill johnson
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