Jack A Lopez

  • Date JoinedMay 11, 2008
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iceng6 months ago

Our old rabbit passed last week, so today the wife got this creature who I wanted to call Harvey but the grand kids never saw a Pooka, and named this baby, Buttons even though he will grow 3X this year...

Jack A Lopez (author)  iceng6 months ago

By the way, I have never seen a Pooka either. Had to do some searching to figure that one out.

But I haven't really figured it out yet, because there is not a lot of agreement on what these creatures look like.

I guess the one you call Harvey,
is an enormous, anthropomorphic rabbit, who is also invisible.

Well, that sure is weird!


A magical movie from the actor that made the Wonderful Life film.


Jack A Lopez (author)  iceng6 months ago

Well, I'm sorry to hear your old rabbit died, but it may have chosen to die at an opportune time of year.

I am guessing new rabbits are pretty easy to find in the pet stores in the Spring, especially in the days before Easter.

Although, that's just a guess. I've never gone shopping for a rabbit.

I've kept cats as pets.

Actually cats are pretty good at finding rabbits, although they usually treat them kind of roughly after they find them. ;-P

SamanthaT1 year ago


I just read an old post of yours about silicone caulk and moulds. I wonder if you can help me?

I am trying to make a fat replica (as the ones you can buy are really expensive). Do you think if i follow your instructions below, i could make one? The ones you buy are coloured pale yellow/orange and are squidgy like a rubber to the touch.

One way to fix the gooey-center problem is to mix in with the silicone caulk, a small amount of water, plus emulsifier to help it mix, and the usual practical way to do that is using a smidgen of water-based acrylic paint. As a bonus the paint pigment gives a visual indicator of when you have it completely mixed.

Many thanks for any help you can offer..


Jack A Lopez (author)  SamanthaT1 year ago

Hello Sam!

I am having a little trouble picturing what a "fat replica" is. No, wait... I just did a Google(r) image search on that phrase. Yellow/orange and rubbery... You're talking about adipose tissue? I.e. fatty tissue? I.e. what the fatty insides of fat people look like. Well,that's kinda icky.

I think mixing silicone caulk with orange acrylic paint, I think that will give you something orange and rubbery when it cures. Also having the water that was in the wet acrylic paint distributed through the volume of it, I think that water will serve as catalyst to make sure the inside cures, like I was writing before, on that question on the Answers forum,


By the way, I do not consider myself an expert on this subject, and there are other authors who have done things like this, and even written 'ibles, with pictures, and instructions, and everything, e.g.


Also there seem to be a large number of people who are using mixtures based on silicone caulk for to make molds. Then the silicone mold is used to cast some kind of plastic resin. For example a "Let's Make:" search on "cast silicone"


returns a whole bunch of these.

iceng1 year ago

Thought you might like to see a closet EDB

Jack A Lopez (author)  iceng1 year ago

Hey Iceng! Thanks for sharing.

Actually, I am still following the discussion over at,


even though I haven't commented over there, and I saw the video of your closet railing over there too, as a reply to Max's comment about a pipe with a slit so "current cannot flow".

It kind of looks like, even with a big wide slit, the magnet still falls slowly, which I guess means there are still places in the metal, on either sides of the slit, where eddy currents can form.

pkb41125 years ago
Hi Jack A Lopez,

I was recently doing some searching on electromagnets, which led me to a discussion that you were involved in on the topic of a small EMP. I saw that you were able to make a "Piezopen", and I am really interested in this idea. Do you think you could possibly make an instructable about this, or maybe just email me some more info? It seems like a pretty cool little gadget.

Jack A Lopez (author)  pkb41125 years ago
That's something I've been meaning to do anyway: write and instructable on how to make one of those things. I will see if I can get that accomplished sometime this week. If don't meet this deadline, you get the consolation prize, which is me just describing in words how I built the thing, and maybe a few pictures of the last one I have.

Most of the work on the piezo sparky pen was done a few years ago. I made a bunch of them. Some I gave away. Some got lost. And I think there's one that I still know where it is.
Jack A Lopez (author)  Jack A Lopez5 years ago
Finally, my Piezo Pen 'ible. Just published it. Here:

Bartboy6 years ago
Related to the Jackelope?
Jack A Lopez (author)  Bartboy6 years ago
I can neither confirm nor deny such a relationship. Nor would I be at liberty to discuss jackalopes, if indeed such animals did in fact exist.

Well, I'm not talking about normal Jackelopes, I'm talking about KillerJackelopes.
Jack A Lopez (author)  Bartboy6 years ago
Oh! You mean this guy, er bloke. His profile says he's a bloke.<br /> <a href="http://www.instructables.com/member/killerjackalope/">http://www.instructables.com/member/killerjackalope/</a><br /> <br /> The answer is 'no', no relation. BTW looking at the "member since" fields reveals KJ joined instructables before I did, thus making him the <em>Original Jackalope</em>, or OJ, for whatever that's worth.<br /> ;-)<br />