Forum: Automotive Projects
01-24-2021, 08:13 AM
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Replies: 2,001
Views: 3,171,343
Etching glass
Excellent work Jack. Thanks for posting this seldom shown process. You are wise to fear the glass etching. We do it at work. Typically hydoflouric acid is used. At 20% dilution, a couple drops...
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Forum: Automotive Projects
07-17-2020, 09:17 AM
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Replies: 16
Views: 7,653
Tempered glass
Most tempered glass is done chemically. The chemical decreases the Thermal expansion of the glass on the outside. As the glass cools the inside is in tension and the outside in compression. Glass...
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Forum: Automotive Projects
07-17-2020, 09:05 AM
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Replies: 16
Views: 7,653
cutting windshields
Windshields are not tempered. They are a lamination of two layers of glass with plastic sandwiched in between. It can be cut a number of ways; Sandblasting, diamond saw, or old style metal roller...
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Forum: Automotive Projects
07-10-2020, 09:05 AM
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Replies: 463
Views: 253,024
Clutch disc shrinking??
Has any one tried using a clutch disc for shrinking? Seems to me it's all about friction to generate heat. What better? I have thought about putting some friction segments from a clutch on a...
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Forum: Automotive Projects
06-16-2020, 10:16 AM
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Replies: 10
Views: 5,434
41 willys
I can't recall where I read it, but someone in east Europe is making Aluminum Willys bodies.
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Forum: Automotive Projects
04-23-2020, 09:12 AM
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Replies: 2,001
Views: 3,171,343
CNC data
CAD and CAM systems can be crazy expensive. Not worth buying unless you are going to do a lot of it. A seat of Solidworks and MasterCam can run $20k (US) with all the add-ins.
Fusion 360...
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Forum: Automotive Projects
04-22-2020, 09:06 AM
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Replies: 655
Views: 1,432,157
Headlights
Am I seeing early VW beetle headlights?
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Forum: Automotive Projects
03-13-2020, 08:59 AM
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Replies: 25
Views: 10,214
windshield
I hate to be a pest, but my mind can't rest after seeing how well the windshield worked out. I studied the metal "mold" for the glass, but it is not adding up. Did the the glass factory make...
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Forum: Automotive Projects
03-06-2020, 11:15 AM
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Replies: 25
Views: 10,214
Glass
What are you planning for the windshield?
Cool project, thanks for posting.
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Forum: Automotive Projects
05-30-2019, 09:14 AM
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Replies: 33
Views: 10,539
Grill
Beautiful job, Paul. Is that the actual radiator or a grill insert?
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Forum: Automotive Projects
05-09-2019, 11:36 AM
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Replies: 2,001
Views: 3,171,343
Mandrel bending
When I have done this, I use 1/4"x12ga steel tube cut into spacers, maybe 1/4 long. I make my insert plates only .01" undersize. I use 1/8" steel cable. With a helper I use the same type bending...
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Forum: Automotive Projects
03-20-2019, 09:03 AM
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Replies: 2,001
Views: 3,171,343
430
430 thermal expansion is only 60% of 304. Should have helped a lot with the weld distortion. Not that you would ever drive this through the salt of a Minnesota winter, but I had 400 series...
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Forum: Automotive Projects
03-06-2019, 10:41 AM
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Replies: 2,001
Views: 3,171,343
Heat dam
I humbly submit some advise to the Master. In past projects with similar, tube/rod edges, I minimized the distortion with a heat dam. A secondary gas purge (top and bottom) can also minimize the...
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Forum: Automotive Projects
01-25-2019, 10:42 AM
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Replies: 2,001
Views: 3,171,343
Casting shrink
Thin sheet wax is available and easy to add a uniform thickness to compensate for shrinkage....
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Forum: Automotive Projects
10-18-2018, 09:08 AM
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Replies: 2,001
Views: 3,171,343
foam forming
Awesome project Jack. I have learned a lot. Thanks for taking to time to post all the details. When I rough out a surfboard, I use a cheap power planer. It is fast and pretty accurate, but the...
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Forum: Automotive Projects
10-18-2018, 09:00 AM
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Replies: 71
Views: 44,892
surface finish
Thanks for the explanation. I figured there was a lot of practice put into that. One trick I have found with engine turning is to use a guide to keep the rows straight but do the spacing by eye. ...
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Forum: Automotive Projects
10-17-2018, 10:33 AM
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Replies: 463
Views: 253,024
Plasma
I could never justify the space for a CNC plasma cutter. So I put a fiberglass(nonconductive) extension pole off the end of the CNC mill table. With a hand plasma torch attached, I can cut small...
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Forum: Automotive Projects
10-17-2018, 10:19 AM
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Replies: 71
Views: 44,892
Flaking
Haven't noticed machine tool flaking on a car before. (cam covers) Was that the original process? What is the theory behind the long handle on the scraper? I have always used a short one that...
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Forum: Automotive Projects
10-15-2018, 09:06 AM
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Replies: 2,001
Views: 3,171,343
Heating large sheets of plastic
This is messy and you have to be careful, but hot cooking oil can be used to soften plastic enough for forming. The heat is very uniform. If you make a box with the plastic sheet on the bottom, the...
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Forum: Automotive Projects
08-12-2018, 10:34 AM
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Replies: 503
Views: 295,592
Dissimilar metals
I have used polysulfide sealer with great success on marine and automotive projects.
https://www.masterbond.com/products/polysulfide-adhesives-sealants-and-coatings
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Forum: Automotive Projects
04-03-2018, 10:15 AM
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Replies: 2,001
Views: 3,171,343
parking brake
Awesome project. Is that an electric parking brake actuator?
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Forum: Automotive Projects
12-27-2017, 07:45 PM
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Replies: 0
Views: 1,962
Sultan
Interesting project. A little rich for me.
https://www.ebay.com/itm/1953-Other-Makes-G80/222766998155?hash=item33ddf2a28b:g:1DMAAOSwtnpaFvNq&vxp=mtr
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Forum: Automotive Projects
10-26-2017, 09:35 AM
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Replies: 17
Views: 5,917
Corrosion at body mounts.
I found this good advice from the folks that build trailers. The tip on using Tape instead of caulk was new to me.
http://www.trailer-bodybuilders.com/fabrication/how-deal-dissimilar-metals
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Forum: Automotive Projects
08-17-2017, 10:07 AM
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Replies: 38
Views: 14,873
Scratch built
Awesome project. You will have to treat it like a full time job to get it done on your timeline. Elegant integration of all the elements of the car is critical to a successful result. It is a...
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Forum: Automotive Projects
04-22-2017, 04:16 PM
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Replies: 4
Views: 3,598
welded tubing
I have made bed sides with tube for the top roll. Welding on one side of the tube will warp it. Bend it 1/8" per foot the opposite way and it will pull back pretty close. It is hard to bend back...
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