One of the more common reasons to utilize the overmoldingprocess is to create a soft grip. Pulling from the example used below, the green part is used functionally as a twist-able nozzle that will help direct the flow of a liquid. However, in this case, the plastic chosen to facilitate the flow and to keep its chemical resistance for lasting part integrity happens to be very rigid and hard to the touch; not ideal for tightening and loosening with human hands.
The solution is to design for an overmolded rubber-like grip to aid the user in the twisting of this product. But, tactile functionality is not limited to human grip. Overmolding can also be cleverly used to add rubber-like grips to clips designed to grab inanimate objects.
We’ve seen a need in the market place for the product developers to help get their custom plastic parts to market quickly. Here is a brief look at how Xcentric Mold helps customers get through the prototype stage and into production.
What does Xcentric do? We offer quick-turn injection molding from 1-15 days and CNC machining from 1-10 days. What benefit do you provide your customer? We help streamline the quoting process where we can educate the customer on materials, we offer custom colors, custom finishes and engraving. With Xcentric and because of our capabilities we don’t put any limitations with how many parts you can get off our tools, as long as we build it, we run it, we give it Lifetime Mold Guarantee.
We don’t want you to change your design to make it easy for us to make your part. Our system will allow us to make your part the way you need to.
Do you have any examples? This is an overmolded part. A customer needed rubber put onto hard plastic and we were able to turn this quote around within a day and, from a purchase order, able to get the parts in the customers hands in 15 days. We are doing insert molding and overmolding. What is overmolding? Overmolding is when you take a hard plastic material and you’re going to put a softer type of plastic on it. What’s overmolded on this is the rubber and these little lenses. So this is actually a three-piece assembly all molded in. What is insert molding? Insert molding is when you’re taking inserts and loading them into the tool and putting the plastic around it. And we are molding in the inserts during the molding process.
It doesn’t matter if it’s off-the-shelf insert or custom insert, we can insert mold anything.
What tolerances can you achieve? A typical tolerance is +/- 0.005″. With our process we can achieve +/- 0.001″ Do you have any certifications? We are ISO 9001:2008 certified and will be transitioning into the 9001:2015. We are also UL and ITAR registered. What are some of the things you can do with your CNC machining service? Let me show you some metal CNC machining. We are doing external threads so we can do thread grinding. We can also do aluminum with tapped holes so if you have threads in your holes we can do that. Any type of feature that has to come in from the side, that’s where our 5-axis machining capabilities come in at. We can also do custom finishes, chrome plating, laser etching. What size parts can you produce? On the CNC side, it’s up to 36 inches. On the injection molding side it’s up to 32oz. shot size (typically 24″ x 24″ x 5″ deep part) How long have you been in business? We’ve been in business for 20 years but our quick-turn development process that we’ve been really streamlined on has been our niche for the last 10 years.
When you need really fast custom parts, contact Xcentric Mold & Engineering
Utilizing our Advanced Mold Making System and Proprietary Process Engine will allow you to add design features you thought weren’t possible and receive parts faster than you thought was probable.
If you are ready, we can provide a quote on your latest project within hours. Get a Quote We’d love to hear about your latest project. Or if you want to know more about how we can help you become the best design engineer, contact Xcentric.
You’ve likely read about and understand custom injection molding. But there may be some terminology that you just need to visualize. Watch what insert molding, overmolding and undercuts are all about and how you can utilize these injection molding features to help with your part design.
What is an Undercut?
What is Insert Molding?
What is Overmolding?
Get Overmolded and insert molded parts with unlimited undercuts fast! Get a Quote
What’s The Difference Between Moldability and Manufacturability?
Though subtle, the differences between moldability and manufacturability can have an impact when designing parts for the plastic injection molding process. In this post we will explain the differences and provide resources for following injection molding best practices.
What is Moldability?
Moldability refers to how well the mold of your part will conform to being injected with molten plastic. Once your mold has been created from your design, a good injection molding process needs to account for how well plastic can fill that mold cavity. From material selection to mold complexity, there are many factors that will determine whether the part you designed is capable of accepting this process. Certain features in your part design like undercuts and threading, can be tricky to mold correctly and consistently. These can cause problems like knit lines, warp and flash. (more…)
Here are the Top 3 Types of Manufacturers and Tips for Choosing The Best Option
Choosing a competent vendor to help you produce your part is a critical step for the success of your project. Let’s examine some of the different types of vendors currently available to source from.
Conventional manufacturing is Unless your design is highly niched, extra large in size or requires more than 100,000 parts run at a time, conventional manufacturing, let’s face it, is just too damned slow. You are looking at a 6-12 week lead time, at minimum. And changes to your design or the tool will take even longer. In this faced paced economy where being first to market is the difference between winning and losing, you just can’t afford to go that route.
You are probably thinking that China can produce your part faster and cheaper than conventional manufacturing. And you’d be right. But faster than 6-12 weeks isn’t saying much and cheaper goes both ways…pricing and quality. Here are some more potential problems when working with a manufacturer overseas:
Hidden Fees– often times, shipping costs, duty and insurance are not included in a quote and will be added after the fact.
Reduced Quality– it’s been reported over the years that, among other problems, many Chinese manufacturers will reduce part quality to increase profit margins. One technique they might employ is to use a substandard material than the one you specified to save on their costs.
Delays– due to logistics and the distances for shipping, delivery can be unpredictable.
Copyright– the laws are very different abroad. There is little you can do to protect your design from being copycatted.
The bottom line is that you are really going to have to take the extra time to vet your overseas vendor to make sure you are getting what you are paying for. But we know your time is precious. There is a third option.
Digital, On-Demand, Rapid Manufacturing
There are some companies right here in the US that specialize in true rapid manufacturing. A true rapid manufacturing company will be able to provide a quote very quickly, will have in-house production capabilities to ensure fast turn-around and be readily available for answering questions. Some companies who claim to be a true rapid manufacturing company are simply brokers. They will take your order within the States and get their Chinese manufacturing partner to produce the mold and parts. No matter what they claim, this sacrifices speed. Xcentric Mold & Engineering is a true rapid manufacturing company. Because we understand the custom nature of all projects, quotes that come through our 24 hour, online, interactive quote system are thoroughly reviewed by a highly trained engineer to determine the best possible way to manufacture it. The result is a quote that represents the best possible price for your part and delivered within mere hours. Combined with our on-site, state-of-the-art, fully-equipped manufacturing facility and along with our Advanced Mold Making System and Proprietary Process Engine, we are routinely able to produce some of the most complex parts that other suppliers will “no quote” or request design concessions. We don’t find it acceptable to require that you change your design. After all, the features you put into that part were put there for a reason, right? It doesn’t make sense to us that you remove them. Instead, we’ll do everything possible to think “outside the box” to get the part that you designed manufactured as you designed it. That is what makes Xcentric Mold & Engineering the best choice for manufacturing your project. We can produce your prototypes and samples very quickly and accurately, but when production parts are your end game, understand that we’ve perfected the injection molding process to:
provide from the lowest to the highest of runs
serve the most economical of budgets
produce the most complex of designs
deliver the most immediate and urgent of projects
And finally, with our Lifetime Mold Guarantee, we will guarantee your mold for life. That means there’s no quantitily limit for the life of your project. With a onetime, upfront tooling fee, we guarantee that we will supply unlimited part quantities for the life of your project. Start your project off right with the manufacturer who can produce more parts, faster, cheaper and more consistently than anyone else.