How do I enlarge a picture to a door size from an 8x10 size How do I make a door size picture from an 8x10?

I am redoing my sliding glass doors. I use Gallery Glass paint to make images on them 

Picture of How do I enlarge a picture to a door size from an 8x10 size  How do I make a door size picture from an 8x10?
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Have a look at this

https://www.instructables.com/id/Giant-Poster/

A Pantograph (purpose made for the door size) would also work great.
Depending on the details it might even be faster.
Apart from that I would prefer a cheap projector, these old ones for the tiny sliding images are great.
But it takes either a good printer to make a tiny pic on transparent foil or a little bit of modifications so the rojector accepts bigger images.

rickharris2 years ago

A very basic way to scale things is to draw a grid over the original. Copy this grid but at a larger or smaller size. then copy the drawing square by square onto the new grid.

This sounds a long process but isn't actually all that bad.

You can make a reasonable copy even if you are not artistic.

In the image i have copied the celtic know at twice the scale of the original.

Original grid 10mm copy grid 20 mm.

grid copy.jpg

I should add that you can put the grid onto an acetate sheet or tracing paper and then over the original so you don't need to draw on your original art.

My brother wanted to decorate my nephew's room with comic book hero's so he took toy projector something like this tracer.

http://www.sunset.com/home/weekend-projects/how-to-paint-floor-canvas/floor-projector

He placed it over the image of Spiderman projected the image on the wall and traced out the image then filled in the colors.

I was looking for the projector when I found this tracer just for the job you are trying to do.