Home |
Search |
Today's Posts |
|
Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to rec.crafts.metalworking
|
|||
|
|||
Drilling Alignment Problem
I'm making a rack out of several ~ 9" long sections of 2 1/2" PVC pipe.
Each section of pipe is cut square on the bottom, and at a 45 degree angle on the top end. The idea is to fasten them to a pair of horizontal rails, using a through bolt on the bottom (which will prevent the objects from falling out), and a short bolt through the back of the top wall with the angle cut sloping forward & down. I have the tubes all cut, and now I need to drill them. The thing I'm pondering is how to best align the slopes so that I can drill the holes on my mill. I can clamp the tubes horizontally using a V-jaw in my vise, but I'd like to come up with a repeatable way of making sure the holes are "square" to the sloping section. I need to make sure the two holes in each tube are parallel to mate well with the rails. IF I could be assured of repeatable rotational alignment, I could drill all the holes in the square ends, and then all the holes in the beveled end. This would be a lot faster than clamping each piece & cranking back & forth 8 inches to drill both holes without removing each piece from the vise. The best idea I've come up with so far is to clamp a rod horizontally at the approximate height of the middle of the tube. If the rod is square to the mill, the rod can serve as a "stop" to push the tube against, and it should force the slope to rotate & align correctly. I have one of these that I could use: http://www.use-enco.com/CGI/INSRIT?PMAKA=TN337-9322 My only concern is if it's rigid enough & getting it aligned in the first place. I have a gut feeling that there ought to be a better way, either simpler or more accurate, but I'm damned if I can think of one. Any ideas? Thanks! Doug White |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Jointer alignment problem | Woodworking | |||
Jointer alignment problem | Woodworking | |||
9"SB Tailstock alignment problem | Metalworking | |||
Powermatic 64A Alignment Problem | Woodworking | |||
Single bar bed, tailstock alignment problem. | Woodturning |