Re: SY2932's project page
Got to spent some personal time on the vertical mill today. This endeavor had a special meaning for me and I'm pretty sure that it will for the owner too...
This compressor housing presents a problem because the area that I needed to engrave was not flat. It had an angle to it. So I had to mount it to a plate with dowel pins and a plate that I cut to clamp the inlet:
Even a
HUGE turbo like this looks small on my table :lol:. What's even more ironic is that I will be cutting it on this huge 22,000 pound CNC with a cutter that is only the width of three hairs or three pieces of paper:
With the mounting plate up against pins in the table, it is gotten in parallel with the table travel in the "X" (from left to right for all you non machinist types out there):
Next the real "fun" begins, getting the area that I need to engrave parallel to the spindle. That is, having it at the same height across the area that I want to machine not only from left to right but also front to back. By the time I am done, it is within .001" in all directions (one third the thickness of a hair or a piece of paper):
Making chips. Mike Renz wanted me to get him some video but as you can see, there is nothing to see with five coolant nozzles blasting the part :lol: :
I had to deck off the area that I had to engrave because there was an ID/part number scribed into it. Only had to take off .005" to achieve 100% clean up. I must say that the castings Garret uses are
VERY high quality. No voids of any kind like I have seen in the other stuff that I have done over the years. That includes both GM and after market.
Took two hours to machine and about an hour to hand polish. The owner said that the outlet would be clocked at 4 o'clock. So I had to engrave the logo at 60 degrees clockwise from the position that I had it mounted on the table. That way, it will be "level" when it is on the truck:
A close up:
Hope that the new owner turns some decent times with it

!