Global Engineering Community | JLCHUB

2026-01-29 10:16:28 21 Views

I try to make a small circle heating pad for my silicone heater. Vibe a preview picture by Gemini, it looks great!

Making a DIY heating pat for my coffee

Flexible Heater

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2026-01-28 17:10:50 32 Views

Screws, rivets, and threaded inserts can all affect assembly strength and ease. Selecting the right fastener is key. Question: Which type of fastener do you prefer for small sheet metal assemblies and why? Have you ever switched fastener types mid-project? What led to that decision? #sheetmetal# #JLCCNC#

Choosing Fasteners for Sheet Metal Projects

Sheet Metal Fabrication

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2026-01-28 17:07:35 23 Views

A good surface finish can improve not only the appearance but also the performance and lifespan of sheet metal parts. Our clients often choose powder coating, anodizing, or brushed finishes based on application needs. Question: What's your main consideration when selecting a surface finish for sheet metal? Aesthetics, protection, or functional performance? Have you ever tried a finishing technique that surprised you with its effectiveness? Share your experiences so we can all learn! #sheetmetal# #JLCCNC#

Surface Finishing: More Than Just Looks

Sheet Metal Fabrication

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2026-01-28 15:30:42 34 Views

A common question in real projects is: Should this part be sheet metal or CNC machined? The answer is not about “which is better” but which is more suitable. 🔸 Sheet metal works best when: Wall thickness is uniform Parts are enclosure-like or structural Quantities are medium to large Cost efficiency matters 🔸 CNC machining works best when: Complex 3D geometry is required Tight tolerances are critical Parts are thick or solid Quantities are small or prototype-focused 📌 In real projects, the best solution is often: Sheet metal + CNC parts combined for optimal cost and performance. 💬 Discussion: Have you ever chosen the wrong process and later regretted it? What would you do differently next time? #sheetmetal# #JLCCNC#

Sheet Metal vs CNC Machining: How Do You Decide?

Sheet Metal Fabrication

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2026-01-28 15:28:11 Edited 46 Views

Many designers and makers only see the final sheet metal part, not the full manufacturing process behind it. A typical sheet metal workflow looks like this: 1️⃣ Laser cutting – defines shape and hole accuracy 2️⃣ Bending – the most critical forming step 3️⃣ Welding or riveting (if needed) – creates assemblies 4️⃣ Surface finishing – powder coating, anodizing, brushing, etc 📌 Why does this matter? Understanding the process helps you: Reduce unnecessary cost Improve manufacturability Shorten production lead time 💬 Discussion: Which step of sheet metal fabrication concerns you the most—precision, bending accuracy, or surface finish? #sheetmetal# #JLCCNC#

From Drawing to Reality: How a Sheet Metal Part Is Made

Sheet Metal Fabrication

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2026-01-28 15:08:04 33 Views

Material selection in sheet metal directly affects: Cost Strength Appearance Lead time Simply writing "Material: Aluminum" in a drawing is often not enough. 🔹 Common sheet metal materials Cold-rolled steel/ Galvanized steel sheet Low cost Good strength Ideal for powder coating Requires surface treatment to prevent rust Stainless steel (304 / 201) Excellent corrosion resistance Premium appearance Higher cost and forming difficulty Aluminum alloys (5052) Lightweight 5052 offers excellent bending performance Suitable for anodizing 📌 Typical use cases: Industrial enclosures: SPCC + powder coating Lightweight or consumer products: aluminum Outdoor or corrosive environments: stainless steel For more details on materials cost, you can refer to How to Choose the Materials in Sheet Metal Fabrication 💬 Discussion: When choosing sheet metal materials, what matters most to you—cost, weight, strength, or appearance? #sheetmetal# #JLCCNC#

Aluminum, Steel Alloy, or Stainless Steel? How to Choose Sheet Metal Materials

Sheet Metal Fabrication

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2026-01-28 15:01:35 32 Views

From real production experience, most sheet metal issues are not caused by manufacturing, but by design decisions made early on. Here are some common design mistakes we see repeatedly: 1️⃣ Zero bend radius In real fabrication, a bend radius can never be zero. Minimum bend radius depends on material type and thickness, and ignoring this often causes cracking or deformation. 2️⃣ Holes too close to bend lines Holes or slots placed too close to a bend line may lead to: Distortion Cracking Unstable dimensions 3️⃣ No consideration for assembly sequence A part may look fine in CAD, but once bent: Tools cannot reach Parts cannot be assembled Welding becomes impossible 📌 Design tip: When designing sheet metal parts, always ask: 👉 “How will this part actually be manufactured step by step?” 💬 Discussion: What is the biggest sheet metal design mistake you've made or seen? Bend issues, tolerances, or assembly problems? #sheetmetal# #JLCCNC#

90% of Sheet Metal Problems Start in the Design Stage

Sheet Metal Fabrication

2026-01-27 13:54:34 29 Views

I bought a silicone heater just like this on JLCPCB for less than five US dollars. It’s insanely cheap, and it’s more than enough to make a pair of hand warmers.

The flexible heaters from JLCPCB such a low price!

Flexible Heater

Official

2026-01-26 10:38:25 34 Views

A Bottom Side Stencil follows the bottom side data of your Gerber file. Use this if your PCB has components on the bottom side and you want precise paste deposition. 💬 Have you ever tried printing the bottom side first, or do you usually start with the top?

Bottom Side Stencil: Don’t forget the underside

SMT Stencil

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2026-01-26 10:36:51 32 Views

This is the standard method for double-sided PCB assembly: One stencil for the top side One stencil for the bottom side It gives you full flexibility, easier handling, and usually better printing consistency. 💬 Which method do you prefer for double-sided boards: single stencil or separate stencils? Why?

Top + Bottom on Separate Stencils——Two stencils

SMT Stencil

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2026-01-26 10:35:24 34 Views

his option lets you create one stencil that contains both top and bottom side patterns from your Gerber files. It can be convenient for some prototyping or small-size PCBs, but make sure your assembly method supports it. 💬 Question: Have you ever used a single stencil for both sides? How did it go?

Top Bottom on a Stencil—One sheet, double data

SMT Stencil

2026-01-26 10:31:58 38 Views

A Bottom Side Stencil follows the bottom side data of your Gerber file. Use this if your PCB has components on the bottom side and you want precise paste deposition. 💬 Have you ever tried printing the bottom side first, or do you usually start with the top?

Bottom Side Stencil: Don’t forget the underside

SMT Stencil

JLCPCB Flex Heater

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2026-01-24 09:33:15 27 Views

Flexible heaters offer several benefits over traditional heating solutions: ✅ Conformability - adheres to curved, complex surfaces ✅ Thin profile - adds minimal thickness to your design ✅ Fast response - quick heat-up and cool-down times ✅ Energy efficient - heat is applied directly where needed ✅ Customizable - any shape, size, power density, voltage ✅ Durable - withstands vibration, bending, harsh environments. Common applications include: anti-condensation, freeze protection, process heating, comfort warming, and temperature compensation in electronics. What applications are you considering?

Why Choose Flexible Heaters? Key Advantages

Flexible Heater

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2026-01-23 18:22:33 76 Views

FPC Gold Fingers PI Thickness Calculator Designing for a ZIF connector? Don't risk a loose connection! This tool helps you calculate the exact combination of base copper, adhesive, and PI stiffeners to meet connector specs. Best for: Ensuring your FPC fits perfectly into its socket. Try it here:FPC Thickness Calculator

FREE Tools for FPC Design

FPC

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2026-01-23 18:14:07 46 Views

Every month is a new chance to innovate! Whether it's a simple LED blinker or a complex drone controller, we want to see what you're building. Community Bonus: Did you know? From next month, every EasyEDA user gets $20 coupons every month upon file export. Finish your project. Export from EasyEDA. Claim your $10 PCB +$10 PCBA Coupon. Post a photo of your finished board here! What are you ordering with your coupon? Share your project below!

Show & Tell: What’s on Your Workbench This Month?

FPC

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2026-01-23 14:31:02 56 Views

How to Calculate PCB Impedance in Seconds! Designing high-speed boards? Then you know that matching impedance is non-negotiable for signal integrity. Instead of manual math, use the JLCPCB Impedance Calculator. Simply input your layer stackup and trace width to get instant results. JLCPCB Impedance Calculator： https://jlcpcb.com/pcb-impedance-calculator

Free Tool Inside - Impedance Calculator

PCB

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2026-01-23 14:26:35 55 Views

Choosing PCB thickness isn't just about aesthetics. If you're stuck between 1.0mm and 1.6mm, ask yourself these 4 questions: Mechanical Strength: Will it carry heavy transformers or heat sinks? (Go thicker >1.6mm) Housing Space: Is your enclosure ultra-slim? (Go thinner <0.8mm) Signal Type: High-power traces need thicker copper, which adds to the total board thickness. Cost & Lead Time: Standard thicknesses (like 1.6mm) are usually the fastest and cheapest to produce. JLC Capability: Thickness for FR4 are: 0.4/0.6/0.8/1.0/1.2/1.6/2.0 mm (2.5 mm and above are for 12+ layer PCBs only) Read the full breakdown on our blog: https://jlcpcb.com/blog/how-to-choose-the-thickness-of-pcb

How to Choose the Right PCB Thickness?

PCB

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2026-01-23 12:00:16 34 Views

FPCs are great because they are thin, but sometimes you need a little "backbone" for soldering components or inserting into connectors. At JLCPCB, we offer three main types of stiffeners: FR4: Best for providing rigid support under heavy SMT components. Polyimide (PI): Adds thickness for ZIF connector insertion without losing too much flexibility. Stainless Steel: The thinnest way to provide extreme rigidity and heat dissipation. Which stiffener do you prefer for wearable designs? Let's discuss!

FPC Stiffeners?

FPC

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2026-01-23 11:58:55 37 Views

Choosing the right surface finish is a critical decision that affects both the cost and the reliability of your assembly. Here’s a quick breakdown to help you decide for your next JLCPCB order: HASL (Hot Air Solder Leveling): The most cost-effective and traditional choice. Great for through-hole components, but the surface can be slightly uneven. ENIG (Electroless Nickel Immersion Gold): Perfect for fine-pitch SMT components and BGAs. It offers a flat surface, excellent oxidation resistance, and a long shelf life. Quick Tip: If your design has components with a pitch smaller than 0.5mm, go with ENIG to ensure high soldering yield! What's your "go-to" finish for prototypes? Let us know in the comments! #PCB#

HASL vs. ENIG: Which Should You Choose?

PCB

JLCPCB Flex Heater

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2026-01-23 10:19:59 28 Views

At its core, a flexible heater consists of three main layers: Flexible substrate (PI film, silicone, PET, etc.) Resistive heating element (etched foil, printed silver, or wire) Insulation/protective layer. When electrical current passes through the resistive traces, it generates heat through Joule heating effect. The serpentine or spiral trace pattern ensures even heat distribution across the surface. We can customize the resistance, voltage, and power density to match your specific temperature requirements - from gentle warming at 40°C to high-temp applications reaching 200°C+.

How Do Flexible Heaters Work? Simple Demonstration

Flexible Heater