Showing posts with label tumble etching. Show all posts
Showing posts with label tumble etching. Show all posts

Friday, August 7, 2015

Faux Roman Glass - a Free Tutorial!

I belong to a group, Beading Back in Time, and we have quarterly challenges.  This quarter, the challenge was Early Civilization (3500 BC - 500 AD).  I decided to make faux roman glass beads and share the tutorial with you.  I'm assuming if you're a lampworker and you're reading this, you know certain things, like safety, applications, etc.  This is a more intermediate tutorial.


The first step is to make a bead in a color you think resembles roman glass.  I chose light aqua and medium blue.  You could also probably use cobalt.  Make your bead as usual, paying attention to the nicely puckered ends.  Once you have your basic bead shape, dip it in baking soda.  I use a pyrex glass bowl for mine.  Then put your bead back in the flame, allowing the baking soda to burn off and create the pitting.  If you want more pitting, put it back in the baking soda for a second time.  Next, shape your bead how you want - I used a brass paddle to shape my beads into a nugget shape - then put them back in the flame quickly so they don't shock, and put them in the kiln.  Run your regular cycle.

Here's what they look like when they're done - they are wet from soaking.  You'll have to soak them, they are really hard to get off the mandrel.  They will feel slimy as well - that's normal.  That's the baking soda.

You will probably ruin some mandrels, as well.  The baking soda really makes the beads stick on the ends; I had to use a locking pliers to get the beads off, even though I soaked them in water for quite a while.

Next, you need to soak them in vinegar for about 20-30 minutes.  This arrests the acid in the baking soda.  I have also read that you can use a very mild, watered down solution of etch-all - I haven't tried this method, so can't speak on it!

These are my beads out of the vinegar.  You will still see a good amount of baking soda on the beads, it's a good idea to take a wet toothbrush and brush the beads to get as much of the baking soda residue off as you can.

For the next step, I tumble etched my beads in my tumbler with the solution of silicone carbide, size 6 glass seed beads, water and a drop of dawn dish detergent - tutorial here.  At first, I ran it for a couple of hours; when I took the beads out, I was not satisfied with the result, so I decided to just run it overnight and see what happened.  I have to say that I am quite pleased with how they look.


When I took them out of the tumbler and rinsed them off, there was a still a little bit of baking soda residue left on them, so I simply took my wet toothbrush and brushed them again.  I'm quite pleased with the look.  I can't, however, attest to whether they hold up over time.  I have heard that baking soda beads continue to degrade - while I don't know this for sure, I thought I would put it out there for you. 

I hope you enjoyed this tutorial! If you're not a lampworker and would like some, please contact me and I'll be glad to oblige!

Susan Kennedy


Monday, October 13, 2014

Tumble Etching Lampwork Beads

If you're a lampworker, you know that etching beads makes them have a smooth, matte finish.  Many people like this surface technique.  I am going to tell you about a technique to tumble etch your lampwork beads!


Sold Beads from Etsy

In 2012, I purchased a baroque-shaped beadroller from CG Beads, and started making this style of bead - I first offered them at Bead Fest, and then offered them in my etsy shop. And then I moved on, to different shapes with this finish, on and off for two years now.  These beads are etched with Etch-All, and acid-based etch solution.  While it works fine, it's...well...acid, and I wanted to get away from that.  Enter Soda Lime Times - a great digital magazine pubished monthly by subscription or single issues for lampworkers by lampworkers (in particular, Diane Woodall).  Jim Smirsich's technique for tumble etching beads was published in 2013.  Diane is kindly allowing me to share the information with you.

Using a dedicated tumbler (which you can purchase at Harbor Freight and use their 20% off coupon to save some money), add a couple of packages of glass seed beads (size 5/0 or 6/0) - they don't have to be expensive, because they are going to be doing a lot of work (I purchased mine at JoAnn's).  Also add about a tablespoon of grit - Jim teaches using silicon carbide grit size 1000; I tried using beach sand and it did not work for me.  Kingsley North sells silicon carbide.

 Add your beads to the tumbler, and add some water, to just cover the beads.  You can tumble for as long as you want - I would recommend experimenting on tumbling time, because there are different finishes you can achieve - a luster appearance all the way to a full etch.

 Tumbler in Action

Here are the results of my experimentation with this method. This first bead photo is to show you how etching with acid looks - it etches the whole bead, including the nooks and crannies.

Here are beads I made in the baroque style I made in 2012 unetched.

Here is a photo of the beads etched in the tumbler, for about 4 hours.
You can see the wonderful satin-smooth finish they get.  The only thing about tumble etching is that it doesn't get into the nooks and crannies of beads; you may or may not like that.

More beads etched with tumbler:
The last set in the photo (green) was made with enamel powder - notice that it etches the enamel powder as well.

I decided to try and etch some of my round swirl beads, as well as some smooth focals.

The finish on these beads is so smooth and satiny - it's a little bit different than using the etch acid liquid - it feels much smoother to the touch.  An added bonus is that you don't have to scrub these beads with a toothbrush and water to get the white schmutz (technical term) off the bead that the acid etch sometimes leaves behind.

More beads:





I have to mention that the beads in the top two collages are amazingly smooth to the touch - I feel the tumble etching makes the beads just a bit more elegant than not tumbling or using acid etch.  The black southwest style bead in the third photo is just amazing!  I did not care very much for how the beads in the last photo turned out - I think that the beads that are opaque look better.  If you notice in the last photo, the goldstone band on the top did not etch - these beads were in the tumbler for 2 hours - I'm not sure if it would etch if I left the beads in overnight.

So there you have it - tumble etching beads provides a beautiful finish to your beads, and I really like the fact that I don't have to use chemicals to get the effect.  If you had a bead that had a lot of texture or dots, you would probably still want to use the acid etch, but if not, this is a great technique.

Diane Woodall also told me that if you would like, you can get a sample issue of Soda Lime Times, to check out and see if you would like to subscribe.  I highly recommend it!