Injection Molding               

Injection Molding Calendar
To better serve our growing customer base, please review new customer lead time in the chart below. As of May, 2009, lead time has increased to 8+ weeks depending on project complexity.

Injection Molding Contents:   Proposal    requirements    are we right for you? 

 design for molding    materials    services    guarantee  

We want to supply your Plastic Injection Molded Parts !

Now offering larger parts... 16 oz, or about 26 cubic inch in volume.

PartDaddy.com Incredible Proposal:

• $2500 minimum part order
• Eligible parts must meet requirements below
• NO tooling cost for eligible parts
• Customer provided 3D solid CAD model. Solidworks, SAT, IGES, ProE

Injection Molding Contents:   Proposal    requirements    are we right for you? 

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Molding Services We Offer:

• Straight-Pull molding: This is the type of molding we provide for the great offer above. Basically, parts that can be machined into two mold plates. The plates pull straight apart, and your parts are ejected.
   
• Core-Pull Tooling: Have us quote a molded part with "Core-Pull". The tool may have an engineering fee associated with producing it.
   
• Over Molding: Have us quote machined parts and price to injection mold over the machined part. Based on complexity and quantity Examples: A hex wrench (Allen wrench) with custom grip and logo. A key with rubbery like grip area. A handle to a screw driver.
   
• Threaded Inserts: We machine brass inserts for the size you need. Then press them into the plastic molded part. The molder is the machinist is the engineer. Avoiding unnecessary procedures and avoiding unnecessary steps in manufacturing allows for more efficient throughput and higher quality. We're very good at multiple step projects.
   
• Tooling: At this time, Part Daddy does not sell tools.
   

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Injection Molding Contents:   Proposal    requirements    are we right for you? 

 design for molding    materials    services    guarantee  

Part Requirements:

1. Part Volume Limit: Right now, the largest press we use allows a part volume of about 25 cubic inches (or around 16oz volume).

2. Part Dimensional Limit: Now offering injection molded part up to 16oz shot size. That is about a one pound part! Something as big as a keyboard, or LCD monitor frame.

3. CAD Files: We prefer Solidworks, SAT, IGES, ProE

4. Print: Include tolerances and specify any critical dimensions.  We'll QC the parts to the print you provide. A solid-modeled part is manufactured using YOUR drawing file. So make sure your drawing is correct.

5. Critical Surfaces: Specify surfaces or features that are of any special importance. Specify where ejector marks are acceptable. The ejector marks are where the pins push the molded part out of the mold. You should also keep in mind where the parting line of your part is.
6. Part Design Principles: Design your part for manufacturability. Review the designed for machined molds - Part Daddy's Guidelines below. Thinking about how to manufacture a part can save you thousands of $$$. So get your engineers on to this information. A little planning goes a long way.

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Injection Molding Contents:   Proposal    requirements    are we right for you? 

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Is Part Daddy molding service, right for you? Sure!

Our injection molding services are an excellent fit for parts with machined or satin finishes. Parts with 3D contoured surfaces or complicated surfaces are included in this offer. We presently run parts from tools made by us.

If you presently buy machined plastic parts, think about molding them instead. Your molded part will be a higher quality, consistent dimensional part versus a machined part. Do you require 500 to 500,000 parts? Have us mold them.

Are you importing your molded parts from overseas? Check us out! Get your parts domestically without delay. Ship UPS, freight, or your method. Made in the USA, high quality, low cost.

Application Examples: (see photos at right) Perhaps you need a component for electronics, electronic enclosures, lids, face plates, knobs, buttons, circuit board stand-off, or foot. Perhaps you need a container for packaging, tray for material handling, or that special nylon roller or lever that's tough as nails. We mold FDA approved materials for medical trays, food contact processing parts.

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Injection Molding Contents:   Proposal    requirements    are we right for you? 

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Some Guidelines Design for Machined Molds:

      Save money, design your molded part for easy manufacturing. Using this information will save you a lot of time and money. If you can settle for a .033 radius instead of a .012 radius, then you'll save money. Considering slot widths and feature clearances will save you money. Properly drafting faces of your part can save money. Just a couple things we may advise when reviewing your part.

      Customer testimonial:   "The first delivery of parts saved our customer enough money to pay the annual salary of one of their employees." "Now that we saved [money & time] on this part, I'll be emailing you several other parts soon." -customer requested confidentiality

• Finish: Part Daddy parts are great for customers who need quality parts and  a machined or satin finish. (EDM type bead blast) finishes. Our machined finishes are nice with very little tool marks. We typically apply a light bead blast finish for a smooth opaque appearance. We can lightly polish close to SPI C-2 to C-3 finish.

• Gate: Gating leaves a mark on the part. Indicate where you would like the gate and we'll do our best to accommodate your request. We usually sub-gate. Sub-gates leave small marks on the side of the part and require less handling once your part is molded.
   
• Draft: We can mold vertical side walls, but there will be drag marks on the side of your parts where they eject from the mold. Adding a minimum 1/2° (0.5 degree) draft to side walls will minimize or eliminate side wall scuffing problems.
   
• Ejection: We'll place the ejector pins. However, you can suggest preferred locations. Ejectors Leave a mark and are usually put on the non-cosmetic side of the part.
   
• Designed for Machining: Avoid EDM. It's a slow process, requires additional tooling and expense. Here are some guidelines for parts. Don't worry if your part falls outside of these guidelines, we would still like to take a look at it. We'll be upfront if we can not rapidly turn-around your project.
  
  Some depth limit guidelines for machining with end mills:
  • We can cut a .033 diameter cavity or rib at .38 maximum depth or more
  • We can cut a .066 diameter cavity or rib at .66 maximum depth or more
  • We can cut a .130 diameter cavity or rib at .93 maximum depth or more
  • We can cut a .250 diameter cavity at 1.53 maximum depth or more

• Tolerance:  Specify critical tolerances when providing the CAD model. We pamper your parts... they're molded in an environmentally controlled shop. This helps us keep quality under control among other factors.

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Injection Molding Contents:   Proposal    requirements    are we right for you? 

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Thermoplastics We Mold (and don't mold):

• We mold Nylons, ABS, PP, PE, PC, Acetal, other types. Variations of GF (glass filled) polymers too.

• We offer several colors at no extra charge if a color we stock can work for your part. We have an electric blue, red, canary yellow, pink, green, mocha brown, off-white putty color, white, and black.
   
• For an additional cost, we will acquire a specific resin for customer jobs. However, all costs are due before we order material. We prefer to use resin we stock. We'll provide material certification documentation, certificate of conformance, or other quality assurance documents as required. Specify these, and other requirements, when requesting a quote.
   
• We do not mold PVC, Silicon, Teflon.

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Injection Molding Contents:   Proposal    requirements    are we right for you? 

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Satisfaction Guaranteed:

Parts are manufactured in a climate controlled environment. We QC parts in the climate controlled room temperatures. We will replace parts not within specified tolerance of the blue print supplied with your order.

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Injection Molding Contents:   Proposal    requirements    are we right for you? 

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                 CNC Machining                  

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Here's where we started, in 1996! Precision CNC machined parts. We quote machined parts made of aluminum, brass, hard foam, and plastic. 500 to 50,000 part production.

• Live Tool Lathe: Turn, cross mill, full Y-axis 2-3/4" inch diameter CNC lathes capacity. Ideal for parts with cross holes. Bar fed CNC production up to 1-3/4 diameter bar. Small parts 1/8 bar stock. We can also machine components for solenoid coils and steel plungers. Some more information here.

• CNC Milling - 3 and 4 Axis: 3 Axis machining, engraving, serializing. Typically, we machine parts that are 3 axis. Usually, fixtured to machine the top first, then bottom. Other fixture positions are programmed to cut side holes, slots, tapping, engraving, etc.

  

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