Porter-Cable DP350 instruction manual Operation, Adjusting Spindle Return Spring

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ADJUSTING SPINDLE

RETURN SPRING

The spindle is automatically returned to its upper most position when the handle is released. It is recommended that the handle be allowed to slowly return to the top position after each hole has been drilled in the material. This spring has been properly adjusted at the factory and should not be disturbed unless absolutely necessary. To adjust the return spring, proceed as follows:

DISCONNECT MACHINE FROM POWER SOURCE.

1.Loosen nuts (B) and (E) Fig. 27. Make sure spring housing (A) stays engaged with head casting.

2.While FIRMLY HOLDING spring housing (A) Fig. 27 pull out housing and rotate it until boss (D) is engaged with the next notch on the housing. Turn the housing counterclockwise to increase or clockwise to decrease spring tension. Turn nut (E) until it contacts spring housing (A), then back nut (E) out a 1/4 turn from spring housing (A). Tighten nut (B) against nut (E), to hold the housing in place. IMPORTANT: Inside nut (E) should not contact spring housing (A) when tightened.

D

A

E

B

Fig. 27

OPERATION

Your drill press is to be used with drill bits with a shank of 1/2" or less in diameter. The following will give the inexperienced operator a start on common drill press operations. Use scrap material for practice to get a feel of the machine before attempting regular work.

The use of accessories and attachments not recommended by Delta may result in risk of injury.

IMPORTANT: When the workpiece is long enough it should always be positioned on the table with one end against the left side of the column, as shown in Fig. 28. This prevents the workpiece from rotating with the drill bit or cutting tool, causing damage to the workpiece or personal injury to the operator. If it is not possible to support the workpiece against the column, the workpiece should always be fastened to the table using clamps or a vise.

Fig. 28

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Contents Variable Speed Drill Press General Safety Rules Safety Guidelines / DefinitionsRefer to them often Use them to instruct others Additional Safety Rules for Drill PressesPower Connections Extension Cords Unpacking and CleaningDrill Press Parts Assembly Being Careful not to Overtighten Page Locking Switch OFF Position Operating Controls and AdjustmentsFastening Drill Press to Supporting Surface Starting and Stopping Drill PressFlexible Lamp Table AdjustmentsVariable Speed Control Quill AdjustmentsDrilling Holes to Depth Operation Adjusting Spindle Return SpringCorrect Drilling Speeds Installing and Removing Drill BitsBoring in Wood Drilling MetalLubrication MaintenanceAccessories Canadian PORTER-CABLE Delta Service Centers

DP350 specifications

The Porter-Cable DP350 is a versatile and efficient benchtop drill press that stands out in the crowded market of woodworking and metalworking tools. This machine is designed for both DIY enthusiasts and professional tradespeople, making it a reliable choice for a wide range of applications.

One of the main features of the Porter-Cable DP350 is its powerful 3.2 amp motor. This robust motor delivers an impressive 3/8-inch chuck capacity, allowing users to drill through a variety of materials, including wood, metal, and plastic. The variable speed settings provide a range from 540 to 3,500 RPM, enabling precise control over drilling operations. This variability is crucial for adapting to different materials and thicknesses, enhancing user capability.

Another standout characteristic is the drill press's 2-inch stroke length, which allows for deeper drilling and increased versatility. This feature is particularly valuable when working with thicker materials or when creating holes that require more depth. The depth stop system is another excellent addition, enabling users to consistently achieve the desired depth across multiple projects.

The DP350 also incorporates a durable and stable base that minimizes vibrations, providing a steady platform for accurate drilling. This stability is complemented by an adjustable work table that can tilt and swivel, allowing for greater flexibility and ease of use. The table can also be easily locked in place, ensuring safety during operation.

Porter-Cable has integrated user-friendly technologies into the DP350 to enhance the overall experience. The quick-release chuck enables rapid bit changes without the need for additional tools, streamlining workflows, especially during frequent bit replacement. The machine is also designed with safety in mind, featuring an on/off switch that allows for quick access in case of emergencies.

For those who prioritize portability, the DP350 remains lightweight, allowing for easy movement without sacrificing power or functionality. This combination of performance and practicality makes it an ideal choice for job site use as well as at-home workshops.

In summary, the Porter-Cable DP350 is a feature-rich drill press that combines power, versatility, and user-friendly technologies. Its robust motor, adjustable features, and safety-focused design make it a top choice for anyone looking to enhance their drilling capabilities, whether for professional projects or hobbyist endeavors.
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