A simple jig for cutting a larger hole in the bottom of a clay pot used for fusing/casting glass

August 23, 2018 1 Comment

A simple jig for cutting a larger hole in the bottom of a clay pot used for fusing/casting glass

This is a simple jig that can be made in your studio/shop. It makes enlarging holes in the bottom of a clay fusing pot very simple and is cheap, reusable and accurate.

The normal hole in a clay pot  is 3/4 of an inch depending on the size of the pot.  You need a  1 1/8 to 1 1/4 in hole in the bottom of the pot for pulling larger glass  murrini and in some glass casting techniques.

 I bought this 1 1/4 inch diamond hole saw and large arbor at Home depot.  This was made by Milwaukee, but there are several other options available on line and at fusing stores.

USA made pots seem to  work better for me than imported varieties.  You can get them at your local Home Depot , Lowes or local garden center.

 

Never use a corded drill around water. I used a cordless Festool drill in this video, but any cordless drill with the ability to accept a 3/8 drill bit will work.

I would love your feedback.  Please email me or leave me a comment.  

Special note:

Let the pots dry out before starting your  pre firing schedule, or add a hold at 200 degree hold for 1 hour in your fusing schedule to dry them with the kiln lid propped open a small amount to let water vapor out.  The close lid for final prefire.

Be sure you have good ventilation around your kiln as the prefire removes any binders left in making the pot.

Below is a U-tube video showing how I made/use this simple jig.

Thank you for stopping by. 

Till we meet again.....

Al 

To




1 Response

Jan Harrell
Jan Harrell

August 24, 2018

Great video— now if only I needed to drill a pot bottom but I am sure I need to center something

Leave a comment


Also in Al Heilman's Blog

Cleaning a Wet Tile Saw (Dewalt) after cutting Glass.
Cleaning a Wet Tile Saw (Dewalt) after cutting Glass.

July 06, 2020

My dad taught me a long time ago to clean up after I made a mess in our shop.  If you keep your tools clean they last a long time and save you money on repair bills. If you learn how to take your saw apart and how to clean it, it will work when you need it.    Please leave us some feedback.  If you have and idea for future blogs and videos let me know and I will research the topic it may turn up in a new blog. Enjoy and have some fun in your studio!  [...]

Continue Reading

A Murrini Course in Houston on May 5th and 6th, FAMILY ADDITIONS, & Graduation...
A Murrini Course in Houston on May 5th and 6th, FAMILY ADDITIONS, & Graduation...

July 06, 2020

I appreciate your  support of my Blogs and work.  I have been asked to teach a course based on my blogs.  I will be doing the lectures and Cyndi Seeberger will provide help with the facility.  Thanks for the invite Cyndi!!! This should be a fun weekend to connect with friends old and new.I will be expanding on the content of my I wish I knew blogs.  I hope you can make time to fit this into your schedule. hfc_-___advance__murrine_cane_and_the_vitrigraph_kiln_- [...]

Continue Reading

A surprise flight, and a note on studio safety.
A surprise flight, and a note on studio safety.

July 06, 2020 4 Comments

Yesterday my wife and I celebrated a wedding anniversary.... with an unexpected surprise flight and a rocky landing. I was working with glass powders in my studio very early in the morning. I was letting my wife sleep in so the lights were dim in the bedroom.I always put a respirator mask on when working with glass powders.  I wanted to record what I was doing with a picture.  My cell phone/camera was in the kitchen,  so I left my respirator face mask on and was "onl [...]

Continue Reading