Showing posts with label molding. Show all posts
Showing posts with label molding. Show all posts

Mar 2, 2014

Rigid and flexible molds for Polymer Clay

I use both rigid and flexible molds. Flex molds are becoming so popular and they are certainly easy and fun to use. One or the other may not necessarily be better  however. Depending on use, a rigid mold can sometimes give better and cleaner results. The rigidness of a mold allows for more control and prevents the design being molded from getting stretched and distorted. Flexible molds are great for when the item is rounded, like a button for instance. Rigid molds are impossible to use for a rounded object like a sea urchin that has a bit of a curved underside. In this example you can see the advantage of being able to stretch a mold to pop out a 3 D item, without distorting the curvature and details and you can virtually turn the mold inside out.
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Flexible molds do have their limitations however, in that it is difficult to create texture plates with them. If one has a large surface area to cover such as creating a 4 x 5 sheet, for example, it’s pretty much guaranteed that one will either end up with an unevenly textured piece, that is some areas will be more deeply impressed and others not enough and some of the details may look stretched. Even if one is successful in creating a texture plate with silicone rubber, creating a positive from such a large mold is difficult as the rubbery texture will shift and distort the image you are trying to copy. Another limitation with the flexible nature of such a mold is that if you are trying to create an equal front and back for a pendant, the stretchy nature of the mold might cause one to end up with 2 slightly different sized pieces.
Here is a short version tutorial on how to create a 2 sided item using a rigid mold.
clip_image002 Materials: 
  • Polymer clay such as Fimo which is my new /old preference, but you can use any of the polymer clay brands.
Tools:
  • · Tissue blade
  • · Rigid mold made from polymer clay
  • · Water
  • · Soft or absorbent brush, or small spray bottle for water
  • · Rubber chisel blending tool
  • · Needle tool
  • · Small metal spatula or exacto knife
  • · Texture such as coarse sandpaper or rough craft foam
  • · Small textured bead or stamp to hide seams
clip_image004 Step 1: Spritz or brush your mold with water. If you are going to use Fimo to cast from the mold, then do not use water as it will make the Fimo sticky. Use corn starch instead.
clip_image006 Step 2: Condition clay, roll into ball and press into the mold. Starting in centre of clay press outward to edges of mold.
clip_image008 Step 3: Use tissue blade starting at about centre of mold and slice away excess. Use the edges of mold as a horizontal blade guard or as an indicator of how much excess to trim. Hold the blade as horizontal as possible as not to slice into the mold. It’s kind of like slicing multi levels of colour clay for mokume gane.
clip_image010 Step 4: Turn the mold 180 degrees and slice away clay excess on other half.
clip_image012 Step 5: Using your thumbs, push the clay toward centre of mold or away from the edges of the mold.
clip_image014 Step 6: To remove the clay from the mold, press onto coarse sandpaper or a coarse craft foam texture.
clip_image016 Step 7: Mold should lift away, by causing the clay to stick onto the texture, but if it doesn’t…
clip_image018 Step 8: …you can also use a small metal spatula or needle tool to carefully lift the edges up and then the molded item is easier to remove.
clip_image020 Step 9: Create another piece as before and then mount the 2 pieces together matching the edges.
clip_image022 Step 10: With a rubber chisel tip you can easily blend and smooth seams. You can also use your fingertips to gently pinch the largest seam together first and then use the rubber chisel for the finer details.
clip_image024 Step 11: Seams won’t then have any of the texture. To camouflage you can create a similar texture by using the sandpaper to impress a little bit of texture over the seam, use part of the mold itself, or…
clip_image026 Step 12: If you have any metal beads with an interesting texture that matches, you can use this as a roller on the seam.
clip_image028 Step 13: This pendant is done. All it needs is a hole for stringing and a bit of colour. One of my favourite method is to use mica or metal pulver on black for an antique metal finish. Of course you can choose any colour you like.
Find my latest molds, both rigid and flexible in my Etsy shop
WWW.beadcomber.etsy.com

I’ve added a variety of molds to my shop including this Raven Thor Hammer Pendant mold. There is another hammer, a Sea Horse, Mermaid, Egyptian Themes and much more. I’ll be adding more tonight!

Oct 29, 2012

How to make buttons and shanks

While I’m not new at creating tutorials, creating video tutorials is something new for me. I just published 2 videos on how to create buttons or cabochons. The button tutorial is in 2 parts. Part 1 shows you how to use the flex mold, how to imbed a shank with a seamless back, color and finish your button. Part 2 continues by showing you how I  create and imbed a wire shank. I posted the videos below.

If you are interested in some molds, I’ve begun to list a bunch on both my Etsy and ArtFire.

15-DSC07755

Here are the Video Tutorials. Hope they work well for you…if they do, like or comment on YouTube…

Making buttons with Tina

and here is Part 2

Making buttons with Tina

Now I need to list more molds  among other things, as well as finish some bigger tutorials. They’ll be pdf file format, but in future I have some interesting things in mind…how about live shows?

Apr 29, 2010

New Polymer Clay Tutorial - Steampunk Gears, cogs, washers and a Pendant

I finished my latest tutorial. The title is a bit lengthy, but since the tutorial includes gears, cogs, washers and a pendant...I suppose I could have left it at gears and gone with just the photo. Oh well, it's details.

If you want to fashion some 'steampunk' jewelry but don't have watch parts or immediate access to them, this tutorial would be ideal because you need few materials and tools to get started. You don't even need a pasta machine. Don't worry if you don't have all of the driver bits either, but every household should have at least a few on hand. If anything, at least a Slotted, Square Drive, Phillips or Robertson. If those names are like a foreign language to you, the tutorial includes a chart with names and photos. Google comes in handy when looking up images for Screwdriver bits and I learned a bit ('scuse the pun).

This tutorial shows you how to make your own gears, cogs, and washers. You'll make molds using the common screw driver bits, and all you need are a few other simple tools to complete molds, gears and a pendant.

Geared for easy to intermediate (pun not intended) Even an advanced clayer may get some enjoyment and perhaps even a few tips out of it.

46 steps, 55 photographs, 19 pages
Available on ArtFire



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