Question About Plasma Cam and Bumper Fab - JeepForum.com

 
LinkBack Thread Tools
post #1 of 12 Old 04-26-2011, 11:04 PM Thread Starter
krazymatt
Registered User
2003 TJ Wrangler 
 
Join Date: Apr 2010
Location: New Mexico
Posts: 800
Question About Plasma Cam and Bumper Fab

I plan on fabbing a front bumper out of 3/16" Plate steel. I like the XRC Style of bumpers but I want to create my own version. My friend has a plasma cam cutting system and he said he'll do the cutting for a small fee. Now I know most of the time in these situations you start off with cardboard patterns then you transfer them on to steel. When using a plasma cam system, how do you get the cardboard patterns onto the computer for the plasma cam?

krazymatt is offline  
Sponsored Links
Advertisement
 
post #2 of 12 Old 04-27-2011, 12:41 AM
KMD
Registered User
1976 CJ7 
 
Join Date: Apr 2009
Location: Modesto
Posts: 1,284
Scanner I believe.
KMD is offline  
post #3 of 12 Old 04-27-2011, 04:28 AM
BESRK
GROUND POUNDER
 
BESRK's Avatar
1980 CJ5 
 
Join Date: Nov 2002
Location: Newport News, VA
Posts: 12,285
Either measure them out and enter the dimensions..

or take a digital pic from above, import the JPEG into the CAD, trace it out and scale it to size. That's usually pretty quick..

'80 CJ5 w/AMC360, T176, D44 w/Detroit 4.56, RE 4" YJ lift and 35s..


Lower 2

Guardrail

Down Schoolbus

Slickrock Tellico

Save

Crozet

More Crozet
BESRK is offline  
post #4 of 12 Old 04-27-2011, 05:41 AM Thread Starter
krazymatt
Registered User
2003 TJ Wrangler 
 
Join Date: Apr 2010
Location: New Mexico
Posts: 800
Thanks. That should be pretty simple then. Is there any advice I should follow as far as building this style of bumper nice and strong? I know the easiest way to make a tough bumper is to use a piece of 2x5" rectangular tubing, but that's to plain for my tastes. I know it will be a bit tougher to make a strong bumper out of plate steel. Any advice is welcome. THanks...
krazymatt is offline  
post #5 of 12 Old 04-27-2011, 06:56 PM
dodger889
Registered User
1989 YJ Wrangler 
 
Join Date: Jan 2009
Location: mi
Posts: 4,160
Steel plate bumpers can be stronger that tubing bumpers Depends on the design and how well the welds are. remember The more triangulation you have the stronger it will be.

A 89 yj with a 4.0 aw4 sye out of an 92xj. Now the hard part is done time to get it up in the air just a bit. Working on 8.8 with 3.73 and lsd for the rear. and new D30 hp with 3.73 .
For those who have not figured this out I'm old school but can handle the new too.
Quote:
Originally Posted by bigsquat View Post
im just cheap, and cheap makes you creative.
dodger889 is offline  
post #6 of 12 Old 04-27-2011, 07:35 PM
BESRK
GROUND POUNDER
 
BESRK's Avatar
1980 CJ5 
 
Join Date: Nov 2002
Location: Newport News, VA
Posts: 12,285
Just make sure to run a flap disk along the plasma cut edges to remove all traces of the plasma dross. Otherwise, you'll run into porousity pinholes when you start grinding the welds down... ask me how I know..

'80 CJ5 w/AMC360, T176, D44 w/Detroit 4.56, RE 4" YJ lift and 35s..


Lower 2

Guardrail

Down Schoolbus

Slickrock Tellico

Save

Crozet

More Crozet
BESRK is offline  
post #7 of 12 Old 04-27-2011, 11:08 PM Thread Starter
krazymatt
Registered User
2003 TJ Wrangler 
 
Join Date: Apr 2010
Location: New Mexico
Posts: 800
Quote:
Originally Posted by BESRK
Just make sure to run a flap disk along the plasma cut edges to remove all traces of the plasma dross. Otherwise, you'll run into porousity pinholes when you start grinding the welds down... ask me how I know..
I haven't decided for sure if i'll use the pc to cut the metal. My friend was telling me about some f the isues. I might be better off using the grinder or cutoff wheel. I'll see.
krazymatt is offline  
post #8 of 12 Old 04-28-2011, 04:39 AM
BESRK
GROUND POUNDER
 
BESRK's Avatar
1980 CJ5 
 
Join Date: Nov 2002
Location: Newport News, VA
Posts: 12,285
I've got a plasma table.. if given the choice, I'd use it to cut everything.. everytime. It is that much better.

'80 CJ5 w/AMC360, T176, D44 w/Detroit 4.56, RE 4" YJ lift and 35s..


Lower 2

Guardrail

Down Schoolbus

Slickrock Tellico

Save

Crozet

More Crozet
BESRK is offline  
post #9 of 12 Old 04-28-2011, 07:36 AM
jatepper
Registered User
1985 CJ7 
 
Join Date: Mar 2007
Location: Tucson, AZ
Posts: 2,336
Quote:
Originally Posted by krazymatt View Post
I haven't decided for sure if i'll use the pc to cut the metal. My friend was telling me about some f the isues. I might be better off using the grinder or cutoff wheel. I'll see.
As BESRK said, absolutely no way! You will not get a better, straighter, more accurate cut then the CNC.

1986 CJ7 Laredo - Auto 14k miles
1985 CJ7 Renegade - Auto 33k miles
1982 CJ8 Scrambler - T5 T-SPD
jatepper is offline  
post #10 of 12 Old 04-28-2011, 01:44 PM
mferrari
DelmarvaOffroad.com
 
mferrari's Avatar
1998 TJ Wrangler 
 
Join Date: May 2005
Location: Ocean City
Posts: 2,646
I have a plasma cam table and the easiest way for you would be to grab deminsions from each piece and design it manually in the system. Pictures, tracing, and correct size gets really tough with the pcam software.

Michael Ferrari
Team 120 - DOR Racing - Racing for Operation Homefront
Operation Homefront (OHF) provides emergency financial and other assistance to the families of our service members and wounded warriors.
Thanks to our Sponsors:
Delmarva Offroad - F-O-A Shocks - BD Turnkey Engine - Under Cover Fab - Jer-C Transmissions - Quigley Driveshafts

Delmarva Offroad
You call it rolling, we call it R&D! 443-951-JEEP
mferrari is offline  
post #11 of 12 Old 05-01-2011, 08:47 AM Thread Starter
krazymatt
Registered User
2003 TJ Wrangler 
 
Join Date: Apr 2010
Location: New Mexico
Posts: 800
I started laying out some cardboard to get an idea for my front bumper, and man it's tough to get the cardboard to stay the way you want it. It's getting discouraging real fast especially when this is all new to me. I've used cardboard patterns to reinforce a frame but building a cardboard bumper is another story.
krazymatt is offline  
post #12 of 12 Old 05-01-2011, 01:48 PM
KMD
Registered User
1976 CJ7 
 
Join Date: Apr 2009
Location: Modesto
Posts: 1,284
You need the thin single layer cardboard not the coragated stuff.
KMD is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Xj bumper build with plasma cutter 25jon25 Fabrication Shop 5 11-30-2009 07:04 PM
New plasma cutter, eye protection question mforbes Fabrication Shop 11 08-07-2009 12:57 AM
Plasma Cutter Amp Question jonlb Fabrication Shop 1 06-28-2009 07:19 PM
plasma cutter PBR Fabrication Shop 1 01-08-2008 05:14 PM
PIAA 520 Plasma, are the lenses clear or plasma? RIPPN TJ Audio, CB & Ham Radios, GPS, & Electrical 4 09-20-2004 09:42 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome