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Rapier wit and maintainable ence.
|hackable=no
|hackable=no
|value=~$6000}}
|value=~$6000}}
== Description ==
== Description ==
A recent model Knee Mill made by the Bridgeport company. This is the gold-standard small shop manual milling machine in the US. Most other mills of the same size are direct copies of the bridgeport design. This particular machine is a Series I, J-head with a mechanical variable speed drive. The machine has a power quill feed built into the head, in addition to the additional equipment listed below. This machine is capable of facing, surfacing, drilling and slotting in materials ranging from plastics to mild steel. Harder metals may be cut if special cutters and coolant are available. This machine is not equipped with CNC controls, consequently curved paths are limited to circular arcs. These can be cut on pieces that can be mounted on the 8" rotary table or approximated to a desired precision using the simple or smooth arc functions of the DRO.
A recent model Knee Mill made by the Bridgeport company. This is the gold-standard small shop manual milling machine in the US. Most other mills of the same size are direct copies of the bridgeport design. This particular machine is a Series I, J-head with a mechanical variable speed drive. The machine has a power quill feed built into the head, in addition to the additional equipment listed below. This machine is capable of facing, surfacing, drilling and slotting in materials ranging from plastics to mild steel. Harder metals may be cut if special cutters and coolant are available. This machine is not equipped with CNC controls, consequently curved paths are limited to circular arcs. These can be cut on pieces that can be mounted on the 8" rotary table or approximated to a desired precision using the simple or smooth arc functions of the DRO.
== Personal Tooling and Learning Resources ==
== Personal Tooling and Learning Resources ==
tapping heads<br />
tapping heads<br />
tilting table<br />
tilting table<br />
== Repair and Maintenance ==
Please see the [https://wiki.pumpingstationone.org/File:Bridgeport_Manual_2407_001.pdf service manual].
=== Maintenance ===
Above the high/low/neutral speed selector, there is a plate listing how frequently oiling should occur.
The tram and nod of the head, as well as the squaring of the vice, should be checked by anyone who desires high precision. Because hackerspace, there is no guarantee when they were last adjusted.
=== Repairs ===
The quill needs a return spring as well as a fine feed wheel.
The X-axis handle (opposite the power feed) is missing the pin and spring. The handle and bits are located in the Equipto cabinet.
The handle for the Z-axis front lock has snapped off. The rabbit hole is [http://www.icai-online.com/knee-lock-shaft-assembly.html deeper than expected], or may just be a handle that can be removed.
The screw to prevent collets from rotating in the spindle is frequently removed, as some collets won't fit with it in there and it can cause bigger problems if it shears off.
=== Upgrades ===
The Z-axis DRO is not yet mounted. Please speak to Dean before forging ahead with that.
== Authorization ==
== Authorization ==
