Changes

== History ==

== History ==

* Open for discussion.

* Announced: January 3, 2019

* Language Locked: TBD

* Language Locked: January 17, 2019

* Vote: TBD

* Vote: January 29, 2019

==Background==

==Background==

Lastly, sawdust obscures items on shelves, and reduces the usable space of areas without extra cleaning. Especially in hard-to-reach areas substantial layers of sawdust have settled and are re-suspended when bumped.

Lastly, sawdust obscures items on shelves, and reduces the usable space of areas without extra cleaning. Especially in hard-to-reach areas substantial layers of sawdust have settled and are re-suspended when bumped.

In addition, the current dust collector is very loud due to incomplete soundproofing in the closet.

In addition, the current dust collector is very loud due to incomplete soundproofing in the closet and ductwork.

==Phases of Proposal==

==Phases of Proposal==

For the reasons mentioned above, an upgrade to the dust collection system is being proposed. This is mainly comprised of purchasing a larger, more powerful cyclone, re-working the piping to reduce pressure losses an optimize airflow, and install an automated blast gate system to automatically turn on the dust collection system when tools are being used and to prevent substantial pressure losses from open blast gates. To mitigate excessive noise and fine dust concerns, materials to build a sound-absorbing closet for the DC and two air filtration units are being proposed. Appendix A comprises a CAD drawing of the proposed moves and piping. This will involve several phases.

For the reasons mentioned above, an upgrade to the dust collection system is being proposed. This is mainly comprised of purchasing a larger, more powerful cyclone, re-working the piping to reduce pressure losses an optimize airflow, and install an automated blast gate system to automatically turn on the dust collection system when tools are being used and to prevent substantial pressure losses from open blast gates. To mitigate excessive noise and fine dust concerns, materials to build a sound-absorbing closet for the DC and three air filtration units are being proposed. Appendix A comprises a CAD drawing of the proposed moves and piping. This will involve several phases.

===Moving DC Closet and Some Tools===

===Moving DC Closet and Some Tools===

The current piping layout in the Woodshop results in a long reach of piping between the DC and the table saw, lathe, and sanding areas; thus adding the lathe and sanders to the system would significantly reduce the pressure in the system that is already inadequate. Most light commercial models that PS:1 can fit in the Woodshop cannot provide adequate pressure for the current layout if multiple tools are used. The new piping layout will reduce the pressure drop at the sanders by 4-5 inches, drastically improving dust pickup; Appendix A includes spreadsheets showing the pressure calculations for a hypothetical system where the DC is installed in its current location, and with the proposed layout.

The current piping layout in the Woodshop results in a long reach of piping between the DC and the table saw, lathe, and sanding areas; thus adding the lathe and sanders to the system would significantly reduce the pressure in the system that is already inadequate. Most light commercial models that PS:1 can fit in the Woodshop cannot provide adequate pressure for the current layout if multiple tools are used at the same time. The new piping layout will reduce the pressure drop at the sanders by 4-5 inches of water, drastically improving dust pickup; Appendix A includes spreadsheets showing the pressure calculations for a hypothetical system where the DC is installed in its current location, and with the proposed layout.

The DC will be located where the plywood rack currently is, and the plywood rack, ShopBot desk, and computer shelves will need to be moved to the left. This will require a three-phase 220V 50A hookup to be installed in the new location.

The DC will be located where the plywood rack currently is, and the plywood rack, ShopBot desk, and computer shelves will need to be moved to the left. This will require a three-phase 220V 50A hookup to be installed in the new location.

In addition, to remove fine dust, three air filter units are proposed, using this Grizzly model:

In addition, to remove fine dust, three air filter units are proposed, using this Grizzly model:

 

The volume of the wood shop is 25' x 75' x 12' = 22,500 cubic feet. Note that for the purpose of air filters the height is 12' though the shop ceiling is closer to 16' - fine dust generated at floor level does not typically reach heights above 12'. To achieve the recommended minimum air exchange of 8 times per hour a flow of 3000 CFM is needed (22,500 cubic feet * 8 volumes/hour * 1 hour/60mins). As discussed earlier about sizing the DC, a factor of safety is needed since maintenance will likely not always occur on schedule, and that the wood shop is not completely isolated from Hot Metals or the loading dock. The filter model proposed has a maximum of 1400 CFM, but since these ratings are for clean air and filters, three units with a 'maximum' of 4200 CFM total will operate under normal conditions slightly above the 3000 CFM goal. Smaller units placed strategically around the shop will move air more effectively than a larger higher-throughpass system.

The volume of the wood shop is 28,800 cubic feet; to achieve the recommended air exchange of 8-10 times per hour (using 9) a flow of 4320 CFM is needed (28,800 cubic feet * 9 volumes/hour * 1 hour/60mins). As discussed earlier about sizing the DC, a factor of safety is needed since maintenance will likely not always occur on schedule, and that the wood shop is not completely isolated from Hot Metals or the loading dock.

An inventory of the current ductwork at PS:1 was conducted, and it was determined that the list of ductwork provided in Appendix A is needed.

An inventory of the current ductwork at PS:1 was conducted, and it was determined that the list of ductwork provided in Appendix A is needed.

===Installation of the system===

===Installation of the system===

Should the vote pass, a more detailed work plan will be written to provide a order-of-operations for moving tools, constructing the cabinet, installing the electrical for the new system, installing the ductwork for the new system, and other phases needed in the project. Volunteers will be solicited to help, and minimal disturbance to use of the space will be the goal. It is anticipated that there may need to be a small number of days where the Woodshop is either closed for use or restricted in some way to allow volunteers to safely install the ducting.

Should the vote pass, a more detailed work plan will be written to provide a order-of-operations for moving tools, constructing the cabinet, installing the electrical for the new system, installing the ductwork for the new system, wrapping the ducts with sound-absorbing fiberglass and vinyl, and other phases needed in the project. Volunteers will be solicited to help, and minimal disturbance to use of the space will be the goal. It is anticipated that there may need to be a small number of days where the Woodshop is either closed for use or restricted in some way to allow volunteers to safely install the ducting.

==Cost Estimate==

==Cost Estimate==

Grizzly G0638: $4900

Grizzly DC: $4900<br>

Grizzly Air Filter: x3

Grizzly Air Filters: $500 x 3 = $1500<br>

Duct Work (from Oneida Air Systems): $2000

Duct Work (from Oneida Air Systems): $2000<br>

Ecogate System: $8700

Electrical Work: $1000

Ecogate System: $8700<br>

Construction materials for sound-proof cabinet: $2000

Electrical Work: $1000<br>

Total: $18,600

Construction materials for sound-proof cabinet: $2000<br>

Add 10% for project incidentals: <b>$20,500</b>

Total: $21,300<br>

Add 10% for project incidentals: <b>$23,500</b>

== Goals ==

== Goals ==

We believe the best course of action is to allocate $20,500 to allow the purchase of a new DC cyclone, air filters, automated blast gate system, and necessary ductwork and incidentals for installation of the ductwork. Undertaking this will improve air quality at PS:1 and general cleanliness in the Hot Metals and Woodshop area.

We believe the best course of action is to allocate $23,500 to allow the purchase of a new DC cyclone, air filters, automated blast gate system, and necessary ductwork and incidentals for installation of the ductwork. Undertaking this will improve air quality at PS:1 and general cleanliness in the Hot Metals and Woodshop area.

==Vote Language==

==Vote Language==

*Authorize the board, or an individual deputized by the board, to spend $20,500 for a new dust collector cyclone, air filters, ductwork, blast gates, and related expenses.  

*Authorize the board, or an individual deputized by the board, to spend $23,500 for a new dust collector cyclone, air filters, ductwork, blast gates, and related expenses.  

**Authorization to spend these funds will expire 12 months after the vote approval. Money could be allocated in phases if necessary as the project will likely occur in distinct phases.

**Authorization to spend these funds will expire 12 months after the vote approval. Money could be allocated in phases if necessary as the project will likely occur in distinct phases.

*Authorize the board or an individual deputized by the board to draft a basic 'task list' or work plan to lay out tasks for installing the system, and to solicit volunteers for each phase.

*Authorize the board, or an individual deputized by the board, to draft a basic 'task list' or work plan to lay out tasks for installing the system, and to solicit volunteers for each phase.

*Authorize the board, or an individual deputized by the board, along with the volunteer group, to tape off work areas as needed in order to perform necessary work safely.

*Authorize the board, or an individual deputized by the board, along with the volunteer group, to tape off work areas as needed in order to perform necessary work safely.

== Voting ==

== Voting ==

== Receipts ==

== Receipts ==

[[Category:Votes]]

[[Category:Votes]]

[[Category:2019 Votes]]

[[Category:2019 Votes]]