Keys of Marinus 5 keys & Chain

[elkad]

I plan on making all 5 keys. I know there are only 4, but I making the fake key too.

I'm starting off with a wood replica to get my angels right.

I have an image of the measurements, image coming soon, I have to edit the image, I had something in the wrong direction.

[galacticprobe]

Looks like you're off to a great start, elkad. (I saw that you posted a link to this build in your Reference thread. Maybe with your next Update here you could link your Reference thread. This way the link will always be visible, and others can easily find your reference images if they want to build their own keys. Just a thought.)

Your angles and dimensions look about right on your wooden prototype (which you can always make into that one "fake" key that blows up the machine). I'm looking forward to seeing more of your handiwork!

Dino.

[elkad]

Key references.  


I learned on YouTube you can acid etch a circuit board using ether marker, nail polish, or the popular laser print the circuit & hot iron it to the board. (the paper washes off & the ink stays on the board till your finished etching.)

[elkad]

I need a tutorial on printing. The print out on my wood key is a single PDF image page which i measured to size & printed out. It came out perfect. But when I took the same image, made it into a circuit print out fo making circuit boards. It srank from a 73 x 28mm to 48 x 19mm. I printed them out at staples, they didn't have a resize option on the printer, just paper size. I forget the paper size it was on but I measure the print page to 8  1/2 x 11".


To make this a correct print size, I need the flowing info. Paper size, image size all together on one page, & image resolution.

[galacticprobe]

I don't know how much of a tutorial this will be, but from the measurements you've given, it looks like your circuit printout is roughly only 2/3rd the size of your full-size print. The paper size (8.5" x 11") is standard US Letter size.

Looking at your image, it looks like your print margins are close to 1.5" on all sides. If you can somehow alter that so the margins are more like .5" on all sides then it might print out close to the size you need.

I don't know how you created your PDF, so I can't suggest a way of changing that, but most computers have a scale option when printing a PDF:


With just "Scale:" selected as above, you should be able to tell the printer if you want it printed "full size" (100%), or specify a different size in the percentage field (like 120% or so). If you've got the "Scale to Fit:" bubble selected, then you're locked into printing within the set print margins.

If you converted your PFD from a WORD doc or such, you can change the margins in the doc using FORMAT>PAGE, and changing the margins from their default (normally 1 or 1.5") to a smaller margin (like .5"), and you can set each margin individually. Then when you convert that WORD doc to a PDF, it should have the smaller margins (and subsequently larger print area). and your image should print closer to the size you want.

So there are two things to try: changing the scale on the PDF print option (above); or changing the margin size on the original used to create the PDF and then creating a new PDF to see if that works.

I'm sure others'll have more ideas, but this should give you something to tweak on at home before the next final print.

I hope some of this helped.

Dino.

[elkad]

To make things more difficult. I like to ask if anyone on Tardisbuilders has a laser or router table thingy.    My brain went flat on the name. You program the device & it cuts out wood or plastic sheet with a laser or router bit.

Well, anyway, name aside, I would like to make a stencil to spray paint the circuit board design on to my keys. That way I don't have to go threw the long posses of making an actual metal circuit board & spend a butt load of cash on hazardous chemicals,....and safety gear.

I will send you a diagram of the 2 circuit board sides, & there size. I'm thinking both circuit designs on one stencil to make one side of two keys at on time.

[galacticprobe]

To make things more difficult. I like to ask if anyone on Tardisbuilders has a laser or router table thingy.    My brain went flat on the name. You program the device & it cuts out wood or plastic sheet with a laser or router bit.

Do you mean, does anyone have access to a "CNC machine"?

Dino.

[The14thDr]

To make things more difficult. I like to ask if anyone on Tardisbuilders has a laser or router table thingy.    My brain went flat on the name. You program the device & it cuts out wood or plastic sheet with a laser or router bit.

Do you mean, does anyone have access to a "CNC machine"?

Dino.

Or perhaps a “laser cutter”? Those are generally better suited to working with sheet materials, but a CNC machine could work as well.

Try searching for “Ponoko.com” - it’s an online manufacturing service where you send them your files and they laser cut/CNC/3D print your design and have it sent to you. I’ve never used them before, but I’m sure I remember it being mentioned it on this forum at one point - hopefully someone who knows more will be able to chime in and help you out.

[dozman]

Inspired by you, I've literally just used ponoko.com to carve a bunch of Marinus Key circuit parts in 1mm thick clear acrylic.

They gave a free sample with up to $20 of cutting done so I only had to pay for the postage.  Over the weekend I'll get the paper off the parts, take some photos and post them here.  If you like how they look, I can send you the Inkscape files I used and you can do your own test

[elkad]

Cool    I'm waiting with anticipation.   

[justsomeguy]

I'm working on Marinus keys, too.

I decided to print the circuit boards on cardstock, color in the silver bits with silver Sharpie marker, and then encase that in acrylic sheets glued together. It'll be a layer of acrylic, two copies of the circuit (back to back) and then another layer of acylic, all glued to the cylinder.

I'm looking forward to your work!