BioGlass | Color Bar

Archive for the ‘ General ’ Category

Recuperation Workshop at Berkeley Bohemian Glass

Wednesday, April 22nd, 2015

Come learn about recuperation building for energy savings with Hugh Jenkins hosted by Lee Miltier at Berkeley Bohemian Glass studio.  This workshop is one day and held on June 3 before the GAS conference in San Jose.

For more info:


King of Recuperation- Charlie Correll

Friday, October 31st, 2014

425647_10150508312006097_74371817_nCheck out this Fall’s edition of Glass Art Magazine where you can find a fantastic article featuring Charlie Correll.  Charlie has been a founding father for eco-effiecient glass making and has inspired many with his equipment designs and recuperation techniques.   You can order your copy of the magazine at this link


New efficient GH for GlassyBaby

Thursday, July 31st, 2014

glassybaby, a local Seattle glass company, has commissioned a new energy efficient glory hole. Local equipment builder Jordan Kube has shared this video shows the prototype. glassybaby  will be receiving a custom size to suit their needs.

Just about all the materials have been ordered. There are a few local pick up items left.  A fuel/air mixer is on order. Construction can begin much sooner than that, hopefully next week. Jordan would like to have this equipment tested and in place by the end of August.

GREEN FORUM @ GAS Chicago 2014

Saturday, March 29th, 2014

We had a great turn out for the GREEN FORUM presentation at GAS in Chicago!  Thanks everyone who contributed from near & far.
Julie Conway & Chris Clarke presented a discussion on a variety of topics to save energy and money.

See our “PRESENTATIONS” tab for the uploaded slideshow of the Green Forum

Green experts in attendance included Eddie Bernard from Wet Dog Glass, Charlie Correll from Correll Glass Studio,  Garrett Wheeler from Green VI.   Shop techs and operations managers present included,  Ben Sharp from Pilchuck Glass School, Chuck Lopez from Pratt Fine Arts,  Slate Grove from Urban Glass, Brian Engel from Pittsburgh Glass Center, , Hakan Kanca from the Glass Furnace in Istanbul, and Harry Seaman from Corning; among others.  Big Thanks to all for sharing and furthering the discussion of the future of glassmaking.


IMG_3415 IMG_3416IMG_3420 IMG_3421 IMG_3416

Woodfired Furnace by Ed van Dijk

Friday, January 3rd, 2014

From Ed van Dijk:     December 2013

Building and running my first woodfired glass-furnace was out of curiosity.
Knowing that thousands of years glassmakers had been making the most beautiful glass(art)work even without the use of electricity it was hard to understand how they were running a studio in the ‘old days’.
My first exempt was a firebrick “Roman”style furnace, build during a glass event some years ago in the small town of Lier in Belgium.
Build it in about two days time with a little knowledge of old designs and after a workshops in The Netherlands with guys building masonry heaters. Masonry heaters were as close as I could get to a combination of glass-furnace building and wood firing. romanfurnace1 romanfurnace2 romanfurnace4 romanfurnace5

After finishing building we started firing this first furnace to dry it. It took us about 30 hours of firing to get the temperature up till 1170 ºC. The 4 small pots of glass holding about 25 kg of glass were great to play with and open to anyone that wanted a try. We ran the furnace for about a week and did constant firing (24 hours a day) in shifts. Great fun that was, all those nights at the hot furnace, but lovely to get back to a normal rhythm of sleeping after the final party. Conclusion: ‘Its great to do but there is so much more to learn’ !

In the number of furnaces that followed I changed the interior design from “strictly’ Roman to Rocketstove based, till Rocketstove based with secondary air injection. The differences are enormous, but all of them run/ran totally without electricity.

Methane use at Landfill- Jackson County Green Energy Park

Friday, January 3rd, 2014

 The Jackson County Green Energy Park (JCGEP) utilizes clean, renewable energy resources to encourage economic development, provide environmental protection, and offer educational opportunities that together will help lead towards a more sustainable future for Western North Carolina. Located in Dillsboro, NC, JCGEP captures methane gas from the old town landfill, then uses the gas as fuel for a series of artisan studios, greenhouses and other ventures.    

Seattle visiting artists Robert Burch and Taylor Ames enjoying low-cost fuel usage from methane trapped in the landfill needing to be burned off anyway– might as well make glass with that fuel!!

jcgep-burch jcgep-burch:muth:taylor


Ignite Studios in Chicago Recognized for Sustainability Building Practices

Monday, November 11th, 2013

Looking forward to GAS conference in Chicago- March 2014!
The Ignite Studios, the host for demonstrations, is recognized for Sustainable Building Practices…

Rejuvenate existing urban industrial neighborhood
Re-purpose existing building through selective demolition
Minimize new structure by providing simple new industrial shed structure for event space
Recycle demolition rubble to create a new elevated sculpture garden
Plan adjacencies to promote the utilization of radiant heat from Ignite’s hot shop to help heat the event space
Orient event space garden glass wall to reduce solar heat gain
Install new glass garden wall, with a series of operable doors for natural ventilation of hot shop and event space
Reduce urban heat-island effect by replacing asphalt parking lot with a new garden
Provide infrastructure for future solar panel system

For more information:

Ignite Studios/ Andrew Metter, FAIA, Principal Design Architect, Epstein|Metter Studio

Recuperation is worth investment

Sunday, October 20th, 2013

A recuperated glory hole side by side test was done in Seattle in June, 2013 by Jordan Kube and Hugh Jenkins using one of Hugh’s high temperature recuperators. Gas savings were found to be 30- 40% over the typical premix burner system, proving an excellent return on investment. Please stay tuned to BioGlass for the the full write up! See pictures below!


4 IMG_1608 IMG_1634 IMG_1648 IMG_1653 IMG_1656 IMG_1650

SUNY@ Alfred gets energy efficient glass & ceramics studios

Sunday, October 20th, 2013

The SUNY College of Ceramics at Alfred initiated this project to address safety and energy conservation issues in the glass blowing area of Binns Merrill Hall. Heat recovery and the safety of occupants were at the core of the project. As the design progressed, additional deficiencies needed to be addressed.

Given the immense heat produced by the furnaces, thermal comfort was a challenge. The most innovative application of this project was the use of displacement ventilation typically used in industrial settings. A combination of diffusers installed in two locations provide a “cool” work zone around the artist, which improves ventilation efficiencies by distributing a greater concentration of fresh air within the occupied zone.


Slide 1 Custom designed stainless steel exhaust canopies located above each furnace vent keep flue gasses from entering the room and capture the maximum amount of heat. Industrial ventilation techniques and calculations were utilized to design each canopy and provide proper air flow to match the furnace being exhausted. Each canopy is movable through the use of high temperature flexible exhaust hoses typically utilized in the transit industry. The 1,200° F exhaust temperatures made material selection a key component to the design, efficiency and useful life of the HVAC system.

The primary HVAC system is comprised of two large industrial style exhaust fans located on the roof, auxiliary exhaust fan, heat recovery coil section, and make-up air unit. The hot exhaust air from the furnaces is used to temper the incoming outside air through the use of the hot recovery section and a variable speed “run around” style hydronic heat recovery loop. The design of the heat recovery is so efficient that the system is completely self-sustaining with an outdoor temperature as low as 10° F.

Slide 1

Safety of the occupants was critical. Safety interlocks and alarms include automatic furnace shut down in the event of exhaust system failure; gas detection system to notify occupants of an unsafe work environment and automatic activation of HVAC system to purge the space; heat detectors at the ceiling to alarm the owner of high temperatures prior to sprinkler system activation; and custom designed control panel with indicator lights identifying occupants of HVAC equipment status.

Sound transmission was a major concern. Prior to the upgrades the instructor would shut off the ventilation system to teach the class due to excessive noise, which presented a safety hazard. The design included various noise reducing techniques and exceeded the client’s expectations, improving the environment and elevating the ability of the instructor to teach.

June 8, 2013: Eco-efficient Glass Salon @ Pratt in Seattle

Sunday, May 26th, 2013

Explorations in eco- efficient glass studio practices
Could making glass art cost you less?
(how to best use energy, time, money, materials?)

Join us at PRATT Fine Arts Center to learn tips for use of renewable energy, recuperation benefits, alternative fuels, and optimal energy efficiency in a glass hot shop.

-Chuck Lopez  Pratt Shop tech that modified our local community hot shop to operate more efficiently.   In Decemeber 2009  Pratt made some major eqipment changes in the Hot Shop that resulted in signaticant energy savings up to $1500 per month.  As well as efficiently serving a greater part of the glass community with its open rental studios.

-Meet Recuperation Guru Hugh Jenkins, renowned Hawaiian glass art educator, artist and expert in glass studio efficiency.   Here in Seattle building recuperation systems discussing the benefits of recuperation and innovative alternative fuel sources.

-Julie Conway, founder of a discussion of how world-wide glass heritage and culture are threatened, and what innovative steps are being taken by creative individuals such as Christian Thornton in Mexico, the Durk Valkema in Nederlands, Recycled glass programs in Kenya and British Virgin Islands and more.

Saturday June 8, 2013 4:00-6:00 pm
Pratt Fine Arts Center
1902 Main Street
Seattle, WA 98144

For more information, please contact Chuck Lopez: 206.328.2200 Julie Conway: