Enlarging plans from 1/8 to 1/667 Gas scale

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Rich Jones

Well-Known Member
Supporting Member
Joined
Nov 9, 2005
Messages
1,178
Hey Y’all:

I have an ML Boatworks Gas Scale
Frame kit for the 71 Miss Timex. I’ve had this for a couple years and am just getting around to building it. I also have an 1/8 scale full set of Newton plans for this boat. It’s one of several boats that can be built off of Newton plan no 101. I’d like to get the plans blown up to gas scale size in order to have better building guide and to assist in making the jig. Based on the math I’ve done, the plans need to be enlarged to 120%. This would take the boat length from roughly 45” in 1/8 scale to roughly 54” in gas scale or 1/667. My lady was running out today and was going to be by a Staples and offered to take the plans up and have them blown up to 120%. Then if I ever need to make a piece for repair, or make a cowl or something, I’ll have these to use. Anyway, I get a call and Staples said they were only able to go with 125%. I found out that was because this was a default value and not that they didn’t have the ability to do it. So the girl said she’d manually input 120%. So all good right? Wrong. The bulkhead sheet was actually REDUCED. The 3 view layout sheet had been enlarged by like 8% as far as I can tell, and I didn’t even look at the paint sheet because at this point, I need to go back up there anyway.

Are there other considerations other than inputting 120% and pushing go? I’m just wondering why this might have been so challenging. I’m pretty sure I’m right about the 120%. Does anyone have any additional input before I go back up there? Should I have gone somewhere else?

Thanks in advance .

Rich
 
Are you taking the plans and have them blow it up or is it in a digital file.I would think some one with a large plotter could do it I use to work at a electrical company they had some engineers that did digital cameras one of the guys blew me up some plans but not sure how he did it but turned out great
 
It’s not a digital file, it is the full size printed plans. We are going to try to have them correct it. I will be there with my bulkheads in hand and a ruler to make sure they are right. If that can’t happen, I will explore elsewhere.
 
Years ago I did the same thing with the same set of plans. I want to say we enlarged each sheet by 20% and there were no issues at all. The overall length was right there around 54” and I think the overall width was 26”.

What I’m not sure of is I think that Mike may have changed some things around when producing the gas scale kit. The outer lines may be correct but he may have changed the way the bulkheads are cut out on the inside as well as the size of the opening for the engine Bay Area. Before I would spend anymore money, I would check with Mike about that first.
 
Years ago I did the same thing with the same set of plans. I want to say we enlarged each sheet by 20% and there were no issues at all. The overall length was right there around 54” and I think the overall width was 26”.

What I’m not sure of is I think that Mike may have changed some things around when producing the gas scale kit. The outer lines may be correct but he may have changed the way the bulkheads are cut out on the inside as well as the size of the opening for the engine Bay Area. Before I would spend anymore money, I would check with Mike about that first.
Good thoughts Chris. I have the bulkheads so I can compare more easily once the plans are enlarged. If there are differences, I’ll just trace out the laser cut bulkheads and keep those on hand. This is more about using for a building guide and it’s easier to refer to plans that are closer to the size of your pieces. We shall see. I’m sure she probably doesn’t know 100% what’s she’s doing.
 
Good thoughts Chris. I have the bulkheads so I can compare more easily once the plans are enlarged. If there are differences, I’ll just trace out the laser cut bulkheads and keep those on hand. This is more about using for a building guide and it’s easier to refer to plans that are closer to the size of your pieces. We shall see. I’m sure she probably doesn’t know 100% what’s she’s doing.
That’s probably true also. The last time I enlarged a set of plans I was at Office Depot. I honestly don’t know how the working behind the desk manages to find their way from home to work and vice versa every day. Finally someone that knew what a copy machine actually does came over and helped!

I’m going to have to look around but I’m sure I still have an enlarged set of those plans here somewhere, but that was two houses ago (20+ years) when I did that. lol!
 
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