Thread: 55 Wagon Progress
Hybrid View
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07-30-2019 08:04 PM #1
Thanks guys!!
Next job for E was to add some sound deadening to the inside of the door skins...
Behind each of the speaker mounts we added a section of Dynaliner…
She did a good job of that, wait until she sees how much more we have to go!Robert
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07-31-2019 11:51 AM #2
- Join Date
- Apr 2011
- Location
- Prairie City
- Car Year, Make, Model: 40 Ford Deluxe, 68 Corvette, 72&76 K30
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Is the Noico the same stuff you can get off Amazon?Ryan
1940 Ford Deluxe Tudor 354 Hemi 46RH Electric Blue w/multi-color flames, Ford 9" Residing in multiple pieces
1968 Corvette Coupe 5.9 Cummins Drag Car 11.43@130mph No stall leaving the line with 1250 rpm's and poor 2.2 60'
1972 Chevy K30 Longhorn P-pumped 24v Compound Turbos 47RH Just another money pit
1971 Camaro RS 5.3 BTR Stage 3 cam, SuperT10
Tire Sizes
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07-31-2019 03:59 PM #3
That’s where the owner bought it from.Robert
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07-31-2019 05:46 PM #4
BTW... hard copy, coffee table edition (over sized).
Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
EG
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09-04-2019 09:35 AM #5
Progress pics from last night... Yep, we've been block sanding..
Using Evercoat 416 to address the few low spots..
Honing up on my painting skills with brush on seam sealer
Today's lesson is on media blasting and stretch damage that occurs. Here’s what a sand blaster will do to a roof skin when blasting the braces underneath.
Our blaster was doing the brace from underneath/inside and the inadvertent stray media hitting the adjacent roof skin stretched it, pulling it inward toward the media stream . On the outside the “unstretched” area shows as a high spot, the stretched part that needs shrinking is seen as a low. So if you must media blast any braces or internal structure, block off the skin next to it so no media touches it. Save yourself the extra body work.
We fixed the lows by locating the exact spots on the inside that needed shrinking and tapping outward into a small shot bag. To locate, a rare earth magnet is placed outside on the roof skin in each low spot, and some grinding dust finds the magnet on the inside where we can mark the perimeter both inside and out, and work with one person on either side to remove the lows. (See video, magnet marks highs or lows, it doesn’t care) For multiple lows, mark both sides of all spots and number them, so you can move from one spot to the next, calling out the number desired to your shrinking assistant. If your car is too clean to have grinding dust, look under your bench grinder.
Magnet use video:
https://www.youtube.com/watch?v=HHHTKiWZ2Xo
Note on the inside roof skin picture the multiple numbered circles where we found low spots to address.
.Robert
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09-04-2019 06:16 PM #6
- Join Date
- Apr 2011
- Location
- Prairie City
- Car Year, Make, Model: 40 Ford Deluxe, 68 Corvette, 72&76 K30
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More excellent work! Have you seen the attachments for pressure washers that inject sand to sand blast? I'm thinking that would be pretty nice on sheet metal. No heat so hopefully no warpage and no dust too.
.Ryan
1940 Ford Deluxe Tudor 354 Hemi 46RH Electric Blue w/multi-color flames, Ford 9" Residing in multiple pieces
1968 Corvette Coupe 5.9 Cummins Drag Car 11.43@130mph No stall leaving the line with 1250 rpm's and poor 2.2 60'
1972 Chevy K30 Longhorn P-pumped 24v Compound Turbos 47RH Just another money pit
1971 Camaro RS 5.3 BTR Stage 3 cam, SuperT10
Tire Sizes
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09-04-2019 09:28 PM #7
Any heat noticed in normal blasting is a side effect of the peening action. Stretching has already occurred long before the heat shows up, so don't buy into the pressure washer hype too deep. They can cause just as much damage. Think of all that media as little hammer heads beating the sheet metal. In the case of our roof, it was being blasted from the bottom side to clean off the roof brace. The media that struck the roof skin to the sides of the brace was peening the sheet metal, in essence causing it to stretch the skin on the surface that the media is striking. This stretch on the one side of the sheet metal then causes the panel to balloon inward, TOWARD the media source, which on the outside appears as a low. Larger media = bigger hammers. Too much air pressure = a harder swing on those hammers. Whether the media is propelled by air, water, or anything else you can find, too much swing of too big a hammer will indeed stretch, despite the "water keeping the panel cool". Have seen it on hoods, trunk lids, you name it. Someone attempts to clean off an inner structure and hits the sheet metal from the bottom, and you have an instant low right where that brace/structure ends.
Here is a sandblast test I did on a trunk lid to learn up on the subject...
Repairing Sandblast Damage - The 1947 - Present Chevrolet & GMC Truck Message Board Network
.Last edited by MP&C; 09-05-2019 at 03:27 AM.
Robert
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09-05-2019 03:00 AM #8
As usual - a great and interesting read. I learned a lot and won't ever look at a simple dent in the same way!!!
Thank You Robert, for sharing your knowledge... with us mere mortals!
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09-05-2019 06:51 AM #9
i use cardboard inside doors and such when blasting. lot of damage is done by blasting inside .
that blast attachment for pressure washer is nothing new. one came with a washer i bought years ago. good way to destroy a car and make it a rusty mess .
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09-05-2019 07:06 AM #10
Thanks again Mike. The quality of the build on the 55 makes me want to put Rita in the crusher LOL. I did a fair amount of siphon media blasting on Rita on the edges and corners and stuff. I stayed away from flat parts of anything, that being said I still ended up with some distortion on the roof or someone used it for a step ladder, I'm not sure what happened first. Very possible over the course of 70 years it got used as a step ladder.Seth
God cannot give us a happiness and peace apart from Himself, because it is not there. There is no such thing. C.S.Lewis
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09-05-2019 07:22 AM #11
Ken Thomas
NoT FaDe AwaY and the music didn't die
The simplest road is usually the last one sought
Wild Willie & AA/FA's The greatest show in drag racing
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09-05-2019 06:03 PM #12
I've been known to toss a bale (or two) of hay on the roof to finish off a field.
OK, OK... maybe it was 3 or 4.. LOL
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09-06-2019 06:11 PM #13
- Join Date
- Apr 2011
- Location
- Prairie City
- Car Year, Make, Model: 40 Ford Deluxe, 68 Corvette, 72&76 K30
- Posts
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- Blog Entries
- 1
Ok on the pressure washer blaster. Is there any safe media to use to keep war-page down to a minimum? Baking soda, walnut shells? I ask because I fell into another project and I am trying to figure out the best way to get the surface rust off without screwing it up.
.Ryan
1940 Ford Deluxe Tudor 354 Hemi 46RH Electric Blue w/multi-color flames, Ford 9" Residing in multiple pieces
1968 Corvette Coupe 5.9 Cummins Drag Car 11.43@130mph No stall leaving the line with 1250 rpm's and poor 2.2 60'
1972 Chevy K30 Longhorn P-pumped 24v Compound Turbos 47RH Just another money pit
1971 Camaro RS 5.3 BTR Stage 3 cam, SuperT10
Tire Sizes
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09-06-2019 08:27 PM #14
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09-07-2019 04:39 AM #15
Visited a family member at Dockery Ford from the time I was 1 year old through their ownership and then ownership change to Morristown Ford. Dockery was a major player in the Hi Performance...
How did you get hooked on cars?