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| Bernd:
:update: I've finished the jig. :beer: Pictures below. I mounted the keystone shaped part on a piece of 1/4" aluminum plate with 6-32 screws. Used one of the archbars and fastened a fence (?) on the bottom. Added the other four. This keeps the bar in line and hopefuly gives a some what perfect part. Next I prepared the first bar by cutting in four places. Two on one side and two on the opposite side. Cut is about half way through. This facilitates a better bend. Heated the part with a propane torch until red hot, but didn't quite get to red heat. I got a dull red. Going to have to use oxy/actel on the next bend. I noticed a slight mispostioning of the second cut. One of two things, either the jig is wrong or I marked the part wrong for cutting. Closer view of error. I checked the print and sure enough I had not removed enough of the top of the keystone part. Looks like about a 1/4", the thickness of the bar. And that's what is was. I had made it to long. Milled off about 1/4" and it looks better. This looks much better. You can see the saw cut now lines up better. I just need to get the oxy/actel torch out and continue bending. Well that's it for now. I'll post again when I get a chance to bend the rest of this bar. Bernd |
| Bernd:
:update: Dug out the oxy/acetylene torch this morning and found that the acetylene tank was empty according to the pressure gauge, but the regulator gauge still showed pressure, so I hoped I would have enough to do at least the first archbar. I removed some of the stops so it’s easier to get the bent bat in and out. I tested the torch on the first bend and it worked great. Nice bright cherry red heat and bent the left leg of the bar. Next I replaced the stop on the upper right in prperation of bending that leg of the bar. Here’s a pic of heating up the part in preparation of bending the last leg of the bar. And there we have it. The first archbar bent in the jig. In the bending process the whole piece needed to be straightened out. I did finally get it to where it looked like it will be near perfect. At this point I was figuring that none of the pre-drilled holes would line up with the bar that will be bolted on top of this part. Here it is with the bar that will bolt across the top. Both have pre-drilled holes that need to line. Here you can see that multitude of holes that need to line up, three on the right and three on the left. The two holes in the middle will hold the spring board and will be match drill to a casting. And to my surprise the holes all lined up. I guess building this jig paid off. That's it folks. Three more to bend. I'll post again when I start milling some of the castings. Bernd |
| dsquire:
Bernd At first I was going to say that you are lucky to get the holes to line up like that and you should go buy a lottery ticket. :doh: Then I realized that your not lucky but you are good. As long as you cut the bars right, drilled the holes in the right place and bent them properly they would have to line up properly. Great job. Now the important stuff, why are you not at the river playing with the boats? :lol: :lol: Cheers Don |
| DaveH:
Bernd, A really good job. :clap: :clap: :clap: I never doubted for a second that the holes would not line up. ::) ::) ::) Nicely done :thumbup: :thumbup: :thumbup: :beer: DaveH |
| Bernd:
--- Quote from: dsquire on July 31, 2011, 02:32:30 PM ---Bernd Now the important stuff, why are you not at the river playing with the boats? :lol: :lol: Cheers Don --- End quote --- Thanks Don. Reason is that we're, wife and I, going up every other weekend. Next weekend is the big America's Poker run. Hopefuly "MyWay" will run. His new boat was clocked at almost 200mph. Geuss I better take some pictures to upload if he runs his boat. Better yet look here http://1000islandimages.com/10augrun1.html Bernd |
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