Instamorph Pistol Holster




About: I like to Create things, destroy things, and learn about things in the process.

Warning: As with any project dealing with firearms insure that the firearm is unloaded by visually inspecting the magazine and chamber.

An Instructable on how to make a holster for your pistol out of instamorph. Instamorph is a low temperature moldable plastic. At 140 degrees it becomes clear and very soft and moldable like silly putty. Once it has cooled back to room temperature it turns to hard plastic. Due to the low working temperature of instamorph this is not meant to be an everyday carry or heavy duty holster. I made this one for my daughters SR22 .22lr pistol. Just something for me/her at the range.

Step 1: Supplies I Used

boiling water
aluminum foil
rubber backed vinyl flooring
SR22 .22LR pistol

Step 2: Getting Started

I started by boiling the pot of water. While waiting for the water to boil I wrapped the pistol in aluminum foil, as instamorph has a bad habit of sticking to other plastics did not want to take the chance of it sticking to the frame.

Step 3: Molding the Instamorph Around the Gun

Once the water is boiling pour the instamorph into the pot. After the Instamorph becomes clear carefully remove it using a metal utensil. It will be very hot. Carefully roll it into a flat sheet and lay back in the water to reheat. After a few more minutes remove from the boiling water and lay over the aluminum wrapped pistol. Help it to form around the gun but not too tightly or any protruding edges will prevent the firearm from being removed at all once the backing has been added. Once it has been molded around the firearm it will start to turn white as it cools. you can speed this along by putting it in the refrigerator or freezer.I would recommend removing the firearm before placing any of those areas to prevent moisture accumulation.

Step 4: Insuring Fit

Hold the mold against a flat surface and try to remove the gun. pay attention for any areas where it catches if it gets caught, dip that part of the mold back into the boiling water. once it has started turning back clear remove and make adjustments. Your goal is to have enough retention to prevent accidentally falling out but not too much as to prevent you from drawing the firearm.

Step 5: Attaching to Vinyl Baking and Cutting to Shape

Cut a piece of the rubber backed vinyl flooring of the size needed. Align the instamorph mold on the piece of vinyl and clamp if needed. Drill holes large enough to accommodate rivets. Once the holes have been drilled insert the rivet and washer, lock on rivet repeat process for all holes. Now that the imstamorph mold has been attached to the backing again test for fit. If there are issues now, it can be fixed with a heat gun. now that it has been checked for fit you can cut to final shape.

Step 6: Almost Finished

now that fit has been insured and the holster has been cut to shape the last thing to do would be to add belt clips. I have a few steps on the order they just have not arrived yet and if I don't post this instructable now while doing it I never will. lol
Thank you, I hope you enjoyed or even better I hope it helped you!



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    8 Discussions


    2 years ago

    ruger sr22. I got the same great gun


    3 years ago on Introduction

    Don't get me wrong i saw you didn't intend on carrying this but is it just me or does it seem more like a toy instead of tool? I see no need to see if it would hold up lol if you shot more than 3 clips through that 22, which I own as well, The second you put that back in it's "holster" it's going to begin to break down!! Cool idea but kydex is definitely the better choice, you can get a 12x12 sheet for like $8 bucks haha probably get 2 holsters out of that plus some scrap if you were careful.


    3 years ago on Introduction

    If you put after firing pistol on it, your holster would be melt.


    3 years ago on Introduction

    how many bottles of instamorph did you need to make this? just one 12oz jar?


    4 years ago on Introduction

    Kydex works better. I have a friend who is a gunsmith he uses it all the item and it is heat form able, comes in sheet form and is much stronger.

    2 replies

    Reply 4 years ago

    also if you have never made one out of instamorph how do you know Kydex will work better?


    Reply 4 years ago

    yes, it does but it is a well known material for making holsters. I had never seen one made from instamorph so I figured I would give it a go. Also kydex is much harder on the finish of the gun.