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How to measure for accurate hole drilling? [message #317163] Sun, 07 May 2017 17:15 Go to next message
Michael Bozardt is currently offline  Michael Bozardt   Canada
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Location: College Station, Texas
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Okay, I admit it. I am no good with carpentry or electrical work. In making a cover for the door around the window and for the lower "square" portion, I am having a helluva time getting holes in the material in the right places to match the holes already drilled in the aluminum door. I had the material cut by a professional and it fits reasonably well-it's that flexible material from Lowe's that is often used for the headliner. I wanted something that would not wilt when wet, as in if the door gasket leaks. BTW, it is probably not the best material for this purpose, but it is the best answer I have so I am going with it.
But I need help in measuring. I have tried different things including making a pattern from used airliner material, but can't get the holes to line up. Need your help and advice. Thx,
Michael Bozardt gemrecs@yahoo.com

BTW, I have Console Critter cup holders for sale. See ad under "GMC Swap Meet". Photos at Craigslist College Station, TX.
Re: [GMCnet] How to measure for accurate hole drilling? [message #317167 is a reply to message #317163] Sun, 07 May 2017 18:50 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
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Location: Americus, GA
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Senior Member
Michael,

One way to mark the locations of the holes might be to put double-ended
screws (with points on both ends -- which you'll have to make) at the four
corners. Position the panel carefully and press it into place so that the
screws puncture, or at least mark, the corners. It should be simple to
measure from those to locate the other screw holes. Or use the marking
screws at every location.

​JWIMD,


Ken H.


On Sun, May 7, 2017 at 6:15 PM, Michael Bozardt wrote:

> Okay, I admit it. I am no good with carpentry or electrical work. In
> making a cover for the door around the window and for the lower "square"
> portion,
> I am having a helluva time getting holes in the material in the right
> places to match the holes already drilled in the aluminum door. I had the
> material cut by a professional and it fits reasonably well-it's that
> flexible material from Lowe's that is often used for the headliner. I wanted
> something that would not wilt when wet, as in if the door gasket leaks.
> BTW, it is probably not the best material for this purpose, but it is the
> best
> answer I have so I am going with it.
> But I need help in measuring. I have tried different things including
> making a pattern from used airliner material, but can't get the holes to
> line
> up. Need your help and advice. Thx,
> Michael Bozardt mailto:gemrecs@yahoo.com
>
> BTW, I have Console Critter cup holders for sale. See ad under "GMC Swap
> Meet". Photos at Craigslist College Station, TX.
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: [GMCnet] How to measure for accurate hole drilling? [message #317179 is a reply to message #317167] Sun, 07 May 2017 23:31 Go to previous messageGo to next message
Michael Bozardt is currently offline  Michael Bozardt   Canada
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Location: College Station, Texas
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Thank you Ken. I thought of that like why don't they make screws in various sizes like that-all thread like the screw for the air cleaner housing.

I have never been to Canada so why do they keep showing me with the Canadian flag?

[Updated on: Sun, 07 May 2017 23:32]

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Re: How to measure for accurate hole drilling? [message #317180 is a reply to message #317163] Mon, 08 May 2017 07:08 Go to previous messageGo to next message
77Royale   United States
Messages: 461
Registered: June 2014
Location: Mid Michigan
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Senior Member
I put the frp on my door on the inside. It works well. Put a touch of lipstick on the heads of the screws and press the panel in. The back side of the frp will hold that mark.

77 Royale, Rear Dry Bath. 403, 3.55 Final Drive, Lenzi goodies, Patterson carb and dizzy. Mid Michigan
Re: How to measure for accurate hole drilling? [message #317184 is a reply to message #317180] Mon, 08 May 2017 09:31 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
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Any color in particular so he knows what to ask for when going to the store?

I do like the idea. I do not like the idea going to the store to buy it. I do not keep any in stock here.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: How to measure for accurate hole drilling? [message #317188 is a reply to message #317163] Mon, 08 May 2017 10:20 Go to previous messageGo to next message
77Royale   United States
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Location: Mid Michigan
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Ha, the cheapest one she says you can use. Always better to ask first!!!

If all else fails, something in the shade of Mobil 1 grease.



77 Royale, Rear Dry Bath. 403, 3.55 Final Drive, Lenzi goodies, Patterson carb and dizzy. Mid Michigan
Re: [GMCnet] How to measure for accurate hole drilling? [message #317190 is a reply to message #317188] Mon, 08 May 2017 10:26 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
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You guys are skating on thin ice, here. (Grin) Are you trying to get in
touch with your feminine side? Lipstick? Come on. There must be another
marker available.
Jim Hupy
Salem, Or
78 GMC ROYALE 403

On May 8, 2017 8:21 AM, "Wayne Rogewski" wrote:

> Ha, the cheapest one she says you can use. Always better to ask first!!!
>
> If all else fails, something in the shade of Mobil 1 grease.
>
>
> --
> 77 Royale, Rear Dry Bath. 403, 3.55 Final Drive, Lenzi goodies, Patterson
> carb and dizzy.
> Mid Michigan
>
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Re: [GMCnet] How to measure for accurate hole drilling? [message #317208 is a reply to message #317190] Mon, 08 May 2017 13:47 Go to previous messageGo to next message
Jp Benson is currently offline  Jp Benson   United States
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Real men use grease pencils.

JP
Re: [GMCnet] How to measure for accurate hole drilling? [message #317215 is a reply to message #317208] Mon, 08 May 2017 15:51 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
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Jp Benson wrote on Mon, 08 May 2017 13:47
Real men use grease pencils.

JP


Do grease pencils come in Mobil One Red?



Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: How to measure for accurate hole drilling? [message #317216 is a reply to message #317163] Mon, 08 May 2017 15:52 Go to previous messageGo to next message
skip2 is currently offline  skip2   United States
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I've used a dab of toothpaste to mark things like this. Just thought of an old saying "a little dab a do ya" from a Brillcream TV commercial I believe. Who remembers that?
Skip Hartline.


74 Canyon Lands, FiTech, 3.7 FD LSD, Manny Tranny, Springfield Distributor, 2001 Chevy Tracker Ragtop Towd
Re: How to measure for accurate hole drilling? [message #317220 is a reply to message #317163] Mon, 08 May 2017 16:25 Go to previous messageGo to next message
RoadWarrior is currently offline  RoadWarrior   United States
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On softer materials I use doweling. Sharpen the doweling in a pencil sharpener (one of those pre computer gadgets with the crank handle). A dab of stamp pad ink on the point will leave an exact mark.

Another one of my tricks is to cut off a piece of one of those stick erasers (I keep several diameters around) put it in the hole and again use a stamp pad refill bottle to apply ink.

If you really need an accurate mark cut off a piece of all-thread or just the threads on a screw. Take your bench HFT drill press and drill down the center of the threaded shaft just big enough to put a small finishing nail in the hole, (hot glue may be required). A tap with a plastic or rubber hammer will leave a nice dimple to start drilling at.

One more thing - Patience.
Re: [GMCnet] How to measure for accurate hole drilling? [message #317233 is a reply to message #317215] Mon, 08 May 2017 20:34 Go to previous messageGo to next message
Jp Benson is currently offline  Jp Benson   United States
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Ken Burton wrote on Mon, 08 May 2017 15:51
Jp Benson wrote on Mon, 08 May 2017 13:47
Real men use grease pencils.

JP


Do grease pencils come in Mobil One Red?



Pretty close...

http://www.staples.com/Dixon-China-Markers-Red/product_500082

JP
Re: How to measure for accurate hole drilling? [message #317239 is a reply to message #317163] Mon, 08 May 2017 23:56 Go to previous messageGo to next message
Phantom2 is currently offline  Phantom2   United States
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Location: Springfield, IL
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Member
Here's an idea. buy a set of tweezers from Harbor Freight. https://www.harborfreight.com/6-pc-fine-point-tweezer-set-93598.html $6.00

find one that will fit in the screw hole & bend one side of the pair to 90 Degrees outward, cut the other one so it is just short of the bend. Put the bent end in the screw hole, squeeze the pair together & mark at the end of the top arm.


Larry Hopkins 75 Avion Springfield, IL
Re: How to measure for accurate hole drilling? [message #317245 is a reply to message #317163] Tue, 09 May 2017 07:59 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
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I actually have several sets of "transfers". Some for plain holes in wood - as these are rarely tapped. Another is a box of sharp pointed screws that I seem to misplace regularly. I did have them when I put the new cover on the door, but I didn't have enough for all two dozen screws at once. So I elected to do the top first. And I didn't notice that the plastic had slipped......
So, I drilled all the holes right on the mark only to find that the panel didn't with the screws in place.
That is why you can see the double holes in the top edge.
I'll either cover the panel or make a new one when I have nothing else to do for the house, cars, yard and coach.

Matt


Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
Re: [GMCnet] How to measure for accurate hole drilling? [message #317247 is a reply to message #317245] Tue, 09 May 2017 08:34 Go to previous messageGo to next message
Mike Kelley is currently offline  Mike Kelley   United States
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Larry Hopkins:
Hey Man - would you be interested in joining the GMC 6 Wheelers? We do 6 rally's per yr from May thru Oct. Our area is a 200 mile range from Chicago - most members are from IL. & Ind. We are a small club - about 34 paid members and usually 8 to 12 coaches per rally.
$10.00 membership fee per yr - best deal in town!!!
Thanks for your response.
Mike Kelley
GMC 6 Wheeler President
Also known as "The Corvair a holic"

Sent from my iPhone

> On May 9, 2017, at 7:59 AM, Matt Colie wrote:
>
> I actually have several sets of "transfers". Some for plain holes in wood - as these are rarely tapped. Another is a box of sharp pointed screws
> that I seem to misplace regularly. I did have them when I put the new cover on the door, but I didn't have enough for all two dozen screws at once.
> So I elected to do the top first. And I didn't notice that the plastic had slipped......
> So, I drilled all the holes right on the mark only to find that the panel didn't with the screws in place.
> That is why you can see the double holes in the top edge.
> I'll either cover the panel or make a new one when I have nothing else to do for the house, cars, yard and coach.
>
> Matt
> --
> Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> Still Loving OE Rear Drum Brakes with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
>
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Re: [GMCnet] How to measure for accurate hole drilling? [message #317248 is a reply to message #317247] Tue, 09 May 2017 08:51 Go to previous messageGo to next message
Jp Benson is currently offline  Jp Benson   United States
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I actually replaced the lower door panel on my coach last week. After carefully measuring I was able to correctly drill the holes on one side of the panel. Seeing the panel in place I realized that the previous installer wasn't very careful where he drilled the holes and they weren't in the best location to set the curve in the panel. So on the other side of the panel I drilled new holes where I thought they should be. That made the job simple.

JP
Re: [GMCnet] How to measure for accurate hole drilling? [message #317319 is a reply to message #317248] Wed, 10 May 2017 09:21 Go to previous messageGo to next message
Michael Bozardt is currently offline  Michael Bozardt   Canada
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I don't understand. You were able to drill both sides without having excess holes show through the panel?
Re: How to measure for accurate hole drilling? [message #317320 is a reply to message #317220] Wed, 10 May 2017 09:31 Go to previous messageGo to next message
Michael Bozardt is currently offline  Michael Bozardt   Canada
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I like the dowel idea-if I can find dowels small enough. Maybe at a model aircraft shop. Easier to cut and insert than cutting off sheet metal screw heads.
I have posted this question because I experimented on another GMC first and missed the screw holes. I fill them on the FRP with silicone before painting. Doesn't look too bad but I know it's there.
Re: [GMCnet] How to measure for accurate hole drilling? [message #317321 is a reply to message #317320] Wed, 10 May 2017 09:41 Go to previous messageGo to next message
sgltrac is currently offline  sgltrac   United States
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Or you can use som cheap 1/8" plywood and make a template with that. Get
close and move the holes as needed to install then mark them well when
installed to have a template for the real panel.

Sully
77 eleganza 2
Seattle
On Wed, May 10, 2017 at 7:32 AM Michael Bozardt wrote:

> I like the dowel idea-if I can find dowels small enough. Maybe at a model
> aircraft shop. Easier to cut and insert than cutting off sheet metal screw
> heads.
> I have posted this question because I experimented on another GMC first
> and missed the screw holes. I fill them on the FRP with silicone before
> painting. Doesn't look too bad but I know it's there.
>
> _______________________________________________
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> Unsubscribe or Change List Options:
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Sully 77 Royale basket case. Future motorhome land speed record holder(bucket list) Seattle, Wa.
Re: [GMCnet] How to measure for accurate hole drilling? [message #317367 is a reply to message #317319] Wed, 10 May 2017 20:39 Go to previous messageGo to previous message
Jp Benson is currently offline  Jp Benson   United States
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Michael Bozardt wrote on Wed, 10 May 2017 09:21
I don't understand. You were able to drill both sides without having excess holes show through the panel?


Either I don't understand the problem or else I wasn't clear. Left side and right side not front and back. I carefully measured the existing holes on the left side of the door and using a very small bit drilled the left side of the panel to match. Holding the panel in place I probed the holes with and ice pick to check alignment. Then re-drilled to the correct size and secured the left side of the panel. Then drilled all new holes on the right side. Left side took 45 minutes right side was 5 minutes.

JP
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