Lampwork Gas System

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Glassworking




Hive13 Equipment
List of All Documented Equipment
Fulltanks.jpg
Owner/Loaner: Hive13
Hive13 Asset Tag: None
Make/Model: not specified.
Arrival Date: December 2019
Does it work?: yes
Certification Needed?: yes
Contact: Kevin M
Floorplan: Hot Crafts Area
Lampwork_Gas_System.png



About this Item

The torches we have for glasswork require Oxygen and Propane to operate. This page describes the plumbing configuration for supplying those gasses.

Plumbing

Plumbing for Single Stage Bench Torch

The GTT Bobcat Torch and Nortel Minor Torch are plumbed independently to their own bottles with thier own regulators and flashback arrestors per the diagram below.
Single Stage Torch Plumbing Diagram

Plumbing for Two Stage Bench Torch With Hand Torch

The Carlisle CC Torch and Smith Little Torch are plumbed together sharing the same pair of bottles per the the below diagram. The Smith Little Torch has it's own regulators to reduce the gas pressure below the pressure required for the Carlisle CC Torch. The Carlisle CC Torch outer fire is connected via a Griffin Glass Rock-It 05 Foot Pedal with Oxygen Bypass to allow the user to rapidly turn the outer fire on and off without having to readjust the flame each time. The Oxygen bypass allows a small amount of oxygen to flow through the outer fire when it is off to prevent to torch face from overheating when using the inner fire only.
Plumbing for Two Stage Bench Torch With Hand Torch


Gas Bottles and Refill Summary

Hive13 maintains a set of mixed gas bottles/cylinders/tanks to support member glasswork and welding projects. Reasonable consumption/use of these gasses for member personal projects is an included benefit of Hive13 membership. Donations for normal consumption/usage (and particularly for excessive consumption/usage) are always welcome and highly appropriate. This policy will be periodically reviewed based on ongoing compliance and affordability.

Hive13 uses a six-sigma approach to manage the gas bottles/cylinders/tanks in our inventory. This system and procedure requires the gas-using members to monitor the FULL/EMPTY changing status of this inventory to enable timely exchange for service continuity. The general steps are as follows:

  • An EMPTY/FULL paper tag is hung on each bottle/tank/cylinder with the "FULL" side of the tag visible on the bottle/cylinder/tank when it arrives full at the Hive.
  • If and when a gas-using member determines a bottle/cylinder/tank has become empty, the member first should flip that bottle/cylinder/tank tag over from showing "FULL" to showing "EMPTY".
  • The gas-using member should then promptly notify the COO and/or a warden of the particular bottle/cylinder/tank status change. A post to SLACK channel (which?) is the preferred means of notification.
  • The gas-using member can also inform the COO and/or a warden the current inventory status of remaining "FULL" bottles/cylinders/tanks for that particular gas.
  • The COO is responsible to determine the extent of each gas bottle/cylinder/tank exchange order that is placed with Matheson Tri-Gas.
  • The determined set of empty bottles/cylinders/tanks are to be carted down to the Hive's 1st-floor INSIDE gas bottle exchange station and nearby OUTSIDE propane tank exchange point by end-of-day on the Tuesday before the scheduled Wednesday exchange. Note combination locks are used on the security chains at both locations.

In general, gas bottle/cylinder/tank exchange orders placed before the end-of-day on a Monday, must have empty bottles/cylinders/tanks carted down to the Hive's 1st-floor INSIDE gas bottle exchange station and nearby OUTSIDE propane tank exchange point by end-of-day on the Tuesday before the scheduled Wednesday exchange by Matheson. All Matheson exchange deliveries are only made on Wednesdays.

This link shows the 2-page PDF document provided to Matheson Tri-Gas to explain their entry access procedure for a gas exchange delivery. This PRIVATE AND CONFIDENTIAL document prepared for Matheson is NOT FOR PUBLIC DISTRIBUTION, but is exposed here as a Hive member reference to show the location for the Hive's 1st-floor INSIDE gas bottle exchange station and nearby OUTSIDE propane tank exchange point. It included specific details for the setup of the expected safety chain and combination padlock security setup for the exchange at each location.

Exchange Restocking Service

Hive13 has established a exchange restocking service with Matheson Tri-Gas, 1151 Findlay St. Cincinnati, OH 45214. Matheson is located about 1.2 miles south from 2710SG near the Underground Sports Shop.

  • The Matheson Inside Sales phone contact is Shane Green at ph: 513.241.5840.
  • The Matheson Packaged Gas Outside Sales Rep is Cameron Walton at ph: 513-288-7072

You must initially "own" a tank (that is 10-year certified with more than 2-years life remaining) to use this Matheson restocking service. Matheson will accept this empty certified tank and provide an equivalent full certified tank for an exchange price. You are basically buying "Gas Only". There can be a ~$65 re-certification fee tacked onto the refill exchange if your tank certification has expired.

This restocking service was initiated on October 30, 2020 with the first Matheson Invoice 17926884 and payment via Hive13 check #314 in the amount $251.84.

For the record, Hive13 (and member Kevin McLeod) initially owned the tanks as shown in the table shown below, that are now in this on-going exchange restocking rotation.

Kevin's tanks are on "long-term loan" to Hive13 and are included in the generic rotation as part of the exchange restocking service with Matheson Tri-Gas. Kevin reserves the right to reclaim his loaned tanks by receiving equivalent exchange tanks to his possession from this exchange restocking rotation at some undetermined future date.

It is an open topic for discussion whether to acquire additional tanks of welding gasses to enable un-interrupted restocking service for these gasses.

Description Owned by Hive13 Owned by member Kevin McLeod Total Owned Used for... Restocking Threshold Reorder Quantity
250 ft3 Oxygen (green) 5 2 7 Glassworking 3 4
20 lb. Propane Tanks 1 1 2 Glassworking 1 1
30 lb. Propane Tanks 2 0 2 Glassworking 1 1
300 ft3 75%-25% ArgonC02 Mix 1 0 1 Welding TBD TBD
300 ft3 100% Argon 1 0 1 Welding TBD TBD

Images

GasDeliveryLocations.PNG

GasBottleExchangeStation.PNG

GasPropaneTankExchangePoint.PNG

GasPropaneTankExchangeSecurity.PNG