Re: Die Grinder recommendations for porting
[Re: tuff440]
#2139170
08/23/16 07:29 AM
08/23/16 07:29 AM
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Joined: Jan 2007
Posts: 685 pennsylvania
poboyengineering
mopar
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mopar
Joined: Jan 2007
Posts: 685
pennsylvania
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There will be lots out there to choose from, but which ever one you get, be sure to buy a speed control. The bits are very hard to control without it. I got mine from HF, it's listed for a router. Very handy. I even use it on my drill to slow it down for larger drills. FWIW, I got my grinder from HF too. If you cheap out like me, be sure to buy the extended warranty. This is my second one since the switch only lasted 3 starts on the first and then " no clickie."
It may be ugly, but it sure is slow.
Girls comb their hair in rear view mirrors and the boys try to look so hard....
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Re: Die Grinder recommendations for porting
[Re: tuff440]
#2139240
08/23/16 11:52 AM
08/23/16 11:52 AM
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Joined: Apr 2006
Posts: 3,675 Akron, Ohio U.S.A.
roadhazard
master
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master
Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
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I have an old Florida or Chicago Pneumatic(?) 1/4" collet with a "front" exhaust and use a Harbor Freight swivel adjustable air controller. I don't port for a living but have done my fair share and it has worked out well for me. I like the "front" exhaust models because it don't blow air/oil back in my face and instead blows the chips out of my work area. You don't have to spend a lot just buy something decent and keep it oiled
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Re: Die Grinder recommendations for porting
[Re: tuff440]
#2139347
08/23/16 03:49 PM
08/23/16 03:49 PM
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Joined: Aug 2003
Posts: 43,161 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,161
Bend,OR USA
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Are you porting iron or aluminum heads or both? There is a world of difference between grinding on iron and aluminum The bits can make a world of difference on how it goes also Buy good bits and use plenty of lube on them when grinding on aluminum
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Die Grinder recommendations for porting
[Re: tuff440]
#2139365
08/23/16 04:07 PM
08/23/16 04:07 PM
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Joined: Dec 2005
Posts: 11,552 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,552
Fulton County, PA
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I have an old Makita GEO600 grinder, made in Japan. They may not be made there anymore. It has done a lot of headwork as well as seen plenty of general use in the shop. It has been a great tool and still works well. Also have a Snap-On PT200L air die grinder which I like and use a great deal. Variable speed paddle and not too big. It has been replaced by the PT200AL. Both tools are large enough to be used 2 handed for control.
If the results don't match the theory, change the theory.
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Re: Die Grinder recommendations for porting
[Re: tuff440]
#2139369
08/23/16 04:14 PM
08/23/16 04:14 PM
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Joined: Sep 2007
Posts: 1,890 Spahn Ranch
RMCHRGR
top fuel
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top fuel
Joined: Sep 2007
Posts: 1,890
Spahn Ranch
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John C. turned me on to these type of grinders. They are also known as rotary or flex shaft tools and are often used by jewelers. They are electric and pretty quiet though they can spin up pretty high. You hang the motor close to your work and use the flex shaft and tool holder to do the shaping. You can control them with a foot pedal. The shank on the burr in the pic would be too short to port heads with but you can use most any burr you want, they attach like any other grinder with a collet. The tool holder makes it easy to use, you have relatively finite control. Mine is a Dumore but there are other brands out there that do the job.
'71 Duster '17 Ram 1500
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Re: Die Grinder recommendations for porting
[Re: tuff440]
#2139385
08/23/16 04:53 PM
08/23/16 04:53 PM
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Joined: Jun 2003
Posts: 9,225 Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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I buy the cheap die grinders from harbor freight. A guy down the street from me claims to port heads and has 1 expensive die grinder. I usually have 13 cheap grinders in rotation setup with different bits. What I can get done in 15 hours takes him 80 hours. He wastes time changing bits all the time. I basically screwed his world up and no one goes to him any more.
the skinny body cheap die grinders from HF seem to work better and I have both straight and 90* grinders. 90* grinders seem to help with leverage and I can cut more material faster.
need an air dryer close to your work station and I have a ball valve to control air on the tool.
when my 5/3 hp motor went south I bought a real 5hp motor. I also have fans blowing on my compressor when ever I'm hacking
I cut a round sponge and put it in a heavy plastic cup and have enough wd40 in cup to keep the bits cool
Last edited by sixpackgut; 08/23/16 04:57 PM.
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: Die Grinder recommendations for porting
[Re: RMCHRGR]
#2139402
08/23/16 05:20 PM
08/23/16 05:20 PM
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Joined: Dec 2005
Posts: 11,552 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,552
Fulton County, PA
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John C. turned me on to these type of grinders. They are also known as rotary or flex shaft tools and are often used by jewelers. They are electric and pretty quiet though they can spin up pretty high. You hang the motor close to your work and use the flex shaft and tool holder to do the shaping. You can control them with a foot pedal.
The shank on the burr in the pic would be too short to port heads with but you can use most any burr you want, they attach like any other grinder with a collet.
The tool holder makes it easy to use, you have relatively finite control.
Mine is a Dumore but there are other brands out there that do the job. I have one like that I've also used, made by Dremel, set up for 1/4" shank burrs. I don't think it's even made anymore. Very handy. It would be worth picking up if you can find one.
If the results don't match the theory, change the theory.
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Re: Die Grinder recommendations for porting
[Re: tuff440]
#2139640
08/23/16 11:46 PM
08/23/16 11:46 PM
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Joined: Jan 2003
Posts: 684 St. Charles, MO.
Slingshot383
mopar
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mopar
Joined: Jan 2003
Posts: 684
St. Charles, MO.
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You can't beat the Dotco die grinders, short neck, long neck, right angle and pencil grinder, for good bits, look at Aircraft Spruce or one of the commercial machine cutter companies. Carbide for steel, high speed steel for aluminum.
1994 Undercover Chassis 125" altered
stack injected big block, soon blown and injected
Member of The Torque and Recoil Club
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Re: Die Grinder recommendations for porting
[Re: RMCHRGR]
#2139713
08/24/16 01:42 AM
08/24/16 01:42 AM
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Joined: May 2008
Posts: 1,131 Thigh-Gap Junction
@#$%&*!
New user name, Same old jerk!
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New user name, Same old jerk!
Joined: May 2008
Posts: 1,131
Thigh-Gap Junction
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John C. turned me on to these type of grinders. They are also known as rotary or flex shaft tools and are often used by jewelers. They are electric and pretty quiet though they can spin up pretty high. You hang the motor close to your work and use the flex shaft and tool holder to do the shaping. You can control them with a foot pedal.
An air grinder can keep a 5hp compressor very busy making lots of heat and noise. Very inefficient. I bought a flexshaft setup and love it. I was too cheap to buy a complete FOREDOM setup (look 'em up). I bought the $50 HF flex shaft grinder with throttle pedal and 1/4hp motor and swapped the 3/16" die grinder for the Foredom 44T 1/4" grinder (another $50). The 44T is small and light and will fit in tight places while the HF motor makes plenty of torque/power. No ear protection required and the thing just hangs there, always ready to use. It's not as convenient as an air grinder for moving around the shop but any time there's more than a little to grind and I can take the work to the bench that's what I'll do.
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Re: Die Grinder recommendations for porting
[Re: @#$%&*!]
#2139731
08/24/16 03:27 AM
08/24/16 03:27 AM
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Joined: Feb 2005
Posts: 20,173 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,173
PA.
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The Foredom grinders can and will spoil you real quick. Light, quiet, small, and lightweight. I haven't touched my big electric or air grinders in years
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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