Choosing a Custom Injection Molder? Use This Six-Question Test

By |2026-06-25T11:59:46-07:00June 21st, 2026|Injection Molding, Custom Parts|

Many buyers choose a custom injection molder the way they shop for printer paper.

Get three quotes: the lowest number, the shortest lead time. Done.

But then the tool ends up needing four revisions, your parts come back short, and the cheapest quote ends up being your most expensive.

Price and lead time are the two things a quote can obscure. The questions that really predict whether your program ships are the ones →

Overmolding vs. Insert Molding: What the Terms Actually Mean

By |2026-06-15T13:02:38-07:00June 15th, 2026|Custom Parts, Engineering, Tooling|

Ask three molders to define overmolding, and you might get three different answers. None of them wrong, exactly, but that’s the problem.

The terms overmolding and insert molding are used interchangeably across the industry, and no governing body has settled the issue.

That means when you go to spec your next part and say ‘overmolding,’ the shop on the other end might be hearing something entirely different.

Here’s how we make this call →

How Injection Mold Teams Evaluate a Part Design Before Production Tooling Starts

By |2026-06-15T13:03:00-07:00May 20th, 2026|Custom Parts, Prototypes, Tooling|

Most pre-tooling DFM reviews are checklists with engineering letterhead. They confirm the part can be molded without breaking the tool, and stop there. That’s not the question you needed answered.

A real review and a liability screen produce reports that look nearly identical — until 60,000 shots into production, when a weld line cracks through a structural zone nobody flagged.

The gap is specific, learnable, and directly observable. Here’s what rigorous looks →

From CAD to “Click”: How We Engineer Seamless Device Housings

By |2026-03-19T13:53:21-07:00March 13th, 2026|Custom Parts, Applications|

“Seamless” is marketing language. In manufacturing, achieving seamlessness means controlling constraints now or facing costly rework, scrap, and warranty returns later.

Many device housings appear perfect in your CAD file because your software has no opinion on parting lines, sink, warp, or what happens after 50,000 cycles on a 440-ton press. CAD also won’t protect you from tolerance stacking when every component lands at the edge of its allowable range, causing →

Glass-Filled Nylon – The Gold Standard for High-Stress Tactical Parts

By |2025-12-13T15:41:40-08:00December 11th, 2025|Custom Parts, Materials|

Walk the floor at Shot Show, and you’ll see the same polymer DNA everywhere. Glock frames, Magpul stocks, Safariland holsters—all built on glass-filled nylon. The industry didn’t just drift here. It sprinted.

If you’re designing tactical parts for firearms, you’re not in the business of reinvention. You’re in the company of domination—where “what works” beats “what if.” Glass-filled nylon isn’t just the material of choice; it’s the kill switch on every →

Geometry is Cost – Why Shape Beats Everything Else

By |2025-11-13T14:25:30-08:00November 7th, 2025|Custom Parts, Manufacturing|

Many engineers obsess over resin prices or the need to quote from three vendors. That is never where the money bleeds out. Shape is the true assassin.

The geometry you lock in at CAD review can drive a meaningful amount of your manufacturing cost—before you even pick up the phone for tooling quotes.

Get shape wrong, and you’re stuck with expensive tools, slow cycles, and scrap bins full of rejects. Today we’re →

Custom Molded Plastic Parts can be Your Competitive Advantage

By |2025-04-15T09:52:18-07:00April 15th, 2025|Custom Parts|

Every product needs an edge to stand out in today’s rapidly evolving market. Custom molded plastic parts might become your most significant advantage when standard components won’t cut it. But why are companies increasingly turning to custom injection molding, and how can this simple choice transform your product’s chances of success?

At H&H Molds, custom plastic injection molding isn’t just another service—it’s our passion. Customization opens doors to unique opportunities, allowing →

Go to Top