In my last post if you look through the rear bumper you can see the humble beginnings of the new rear frame. I took that template to my local metal shop and watched as they sliced through some 1/4 steel like it was butter. They have an 11ft shear that is no joke! Then they welded a couple of cross bars for a basic foundation for me to build upon.
So, I did a bit of homework and decided that I'm certainly never going into the metal fabrication business and didn't want to spend hundreds of dollars on a "tube-notcher" ... trust me they can be pricey! So I did what anyone would do. I went over to Harbor Freight and got one for like $57 bucks. Yes, you get what you pay for and it certainly needed lots and lots of tweaking that included adding washers with varying degrees of thickness to get it to a point where everything was perfectly aligned. granted I also purchased the actual hole saw from Homedepot (Im sure it was at least a step up from Harbor Freight) Once all that was done and I made a few practice cuts and it actually worked out pretty darn good. And I only used 1 hole saw!
As far as tips and tricks go, well I started out using my cordless 18volt drill and it worked but it was laboring. So, I reluctantly shifted over to my Dewalt hammer drill. However, the problem with that drill is the torque, its great for the job at hand but if it catches the metal it could twist the cracker jacks out of my wrist... trust me... I know! So, I used the handle and braced it against the table to prevent the twisting from happening... and it all worked perfectly. I also used compressed air to cool the blade instead of cutting oil or WD-40 and it seemed to work perfectly as the blade never seemed to lose its edge.
This was my foundation I started from, its 12 inches high as I'm also going to be attaching reinforcements for the rear wing.
Here is my notching setup.
After my practice cuts this is what I ended up with.
Got pretty good fitment.
The almost finished product.