Jiangsu Jiacheng Tools Co. Ltd

04/06/2026

Not all chips are created equal — and what's normal depends entirely on what you're drilling.

A powdery chip in cast iron? That's correct. The same chip in mild steel? Your edge is gone.

Here's the quick reference:

🔩 Mild Steel → Short Spiral Chips
🔩 Carbon Steel → Uniform Spiral Chips
🔩 Stainless Steel → Medium to Long Spiral Chips
🔩 Aluminum → Long Continuous Chips
🔩 Copper → Long Ribbon Chips
🔩 Brass → Short Broken Chips
🔩 Cast Iron → Granular Chips
🔩 Tool Steel → Short to Medium Spiral Chips
🔩 Hardened Steel → Short Fragmented Chips

If your chips don't match what's expected for your material, something is off — feed rate, speed, tool condition, or all three.

Know your material. Know your chips. Save your drills.

👉 Full chip diagnosis guide (shape + color + troubleshooting): https://www.jiachengtoolsco.com/news/read-the-chips-know-the-drill-how-chip-shape-reveals-what-is-really-happening-inside-your-hole/

Chips are the one part of the drilling process that most operators never look at twice. They sweep them off the table, clear the flutes, and move on. That is a missed opportunity. Chips are the health report of your drilling operation. They tell you whether your parameters are right, whether your...

03/06/2026

Spot weld removal with a standard twist drill is a mistake. 🚫

No self-centering. It wanders, cuts through, damages the panel underneath.

A spot weld drill bit locks onto the weld with a center pilot tip, removes only the nugget, and stops at the panel interface. The lower sheet stays intact.

We use M35 cobalt — spot weld zones are harder than the base metal. M35 holds its edge longer and handles the interrupted cutting that bodyshop work demands. 🔩

Available in 6mm / 8mm / 10mm. Full ground. Self-centering.
DM or visit the link to inquire.

🔗 https://www.jiachengtoolsco.com/hss-co-m35-spot-weld-drill-bits-center-point-6810mm-for-automotive-body-repair-panel-separation-product/

02/06/2026

Most operators sweep the chips away and move on. That's a missed opportunity.

Chips are the health report of your drilling operation. They tell you whether your parameters are right, whether your drill is still sharp — before any of that shows up in the hole.

Here's what the four most common chip types are telling you:

🔵 Short curled chips → Good chip control. Parameters are balanced, tool is sharp. Keep going.

🔵 Long spiral chips → Ductile material or feed rate too low. Risk of wrapping — watch it.

🔵 Blue chips → Heat is out of control. Reduce speed or improve coolant delivery immediately.

🔵 Powdery chips → The cutting edge is scraping, not cutting. Regrind or replace.

Different materials also change what "normal" looks like. Cast iron gives powdery chips by nature. Aluminum gives long ribbons. Stainless produces medium spirals — and punishes a dull edge faster than almost any other material.

The chips are already there. Reading them costs nothing. Ignoring them costs drills, holes, and time.

Full breakdown — chip shape, chip color, and material-specific expectations — in the link below. 👇

https://www.jiachengtoolsco.com/news/read-the-chips-know-the-drill-how-chip-shape-reveals-what-is-really-happening-inside-your-hole/

01/06/2026

The first order is always fine.

That's not the hard part.

The hard part is the fifth order. The twelfth. The one that arrives six months later — and still cuts the same way.

📊 Consistency across batches isn't automatic. It comes from process control, stable raw materials, and someone actually paying attention between orders.

⚙️ Most quality problems don't appear in samples. They appear later, quietly — in return rates, in customer complaints, and in the conversation you didn't want to have.

That's what we work to prevent.

Not just a good first batch.

✅ A reliable supply.

Jiacheng Tools — built for the long order, not just the first.

27/05/2026

🌙 Eid al-Adha Mubarak from Jiacheng Tools!

On this sacred occasion, we extend our warmest wishes to our global clients, partners, and friends. May this festival of sacrifice bring peace, prosperity, and success to you and your loved ones.

Wishing you a joyful and blessed celebration! ✨

25/05/2026

When a buyer orders M35 cobalt drill bits, they're paying for cobalt. Roughly 5% of it, alloyed into the steel, which is what keeps the cutting edge from softening under heat.

The issue: a drill bit labeled M35 looks exactly the same as one that isn't. Same finish, same weight, same packaging. The difference is inside the steel — and you can't see inside steel.

Smaller operations with no incoming material checks will sometimes use standard HSS, stamp M35 on the box, and offer it cheaper. It's not complicated fraud — it's just the path of least resistance when there's no verification system in place.

What we do: every batch of steel that arrives at our factory goes through a spectrometer check. It reads the actual composition — cobalt, tungsten, chromium, molybdenum — not just the supplier paperwork.

If you're buying M35 drills and the price looks like M2, ask some questions. The raw material cost alone is 10–20% higher. Someone is covering that gap somewhere.

We just published a full breakdown of how this happens and what buyers can look out for. Link in comments.

20/05/2026

Most buyers ask the same first question: "Is it HSS? Is it M35 cobalt?"

Fair question. But here's what we see in manufacturing every day — two drill bits, same steel grade, completely different performance in real use.

Why?

Because the grade on the label only tells you what the raw material is supposed to be. It says nothing about what happened during production — heat treatment, geometry, grinding, quality control. Every one of those steps can either preserve the quality of the steel, or destroy it.

Steel grade is the ceiling. The manufacturing process determines whether you ever get close to it.

We've started a series called Why Drill Bits Fail — sharing what we've learned from years on the production floor. First article is live: Why Good Steel Is Only the Beginning.

https://www.jiachengtoolsco.com/news/

14/05/2026

When tungsten prices surged last year and earlier this year, many people started exploring alternative material systems, including lower-tungsten and higher-molybdenum solutions.

On the surface, this seemed like a way to reduce cost pressure and lower exposure to tungsten price fluctuations.

But in manufacturing, a new material system always needs time — from testing and production validation to market acceptance and long-term supply stability.

Recently, the market has shown another interesting shift:

Tungsten prices have started softening again, while molybdenum (Mo) prices are moving upward.

This reflects a very practical reality in manufacturing:

Sometimes the risk is not removed — it is simply transferred from one factor to multiple factors.

For HSS drill bits, long-term stability is often about much more than the material itself.

It also depends on:
- Heat treatment
- Geometry control
- Grinding process
- Consistency
- Quality control systems

Because in the end, customers are not only buying a material.

They are buying stability, predictability, and reliable long-term performance.

In manufacturing, short-term competition may focus on price.

But long-term competition is usually about systems and consistency.

11/05/2026

As a professional manufacturer, we focus on the production and performance of HSS drill bits.

But over the years, we’ve also noticed that many people in the industry have different questions about cutting tools, drilling performance, applications, quality differences, packaging, and even why some drill bits fail unexpectedly.

Our social media is not only a place to promote our products.

We also hope it can become a platform to share more practical industrial knowledge with buyers, distributors, brands, and end users.

In the future, we will organize these topics into different content series, such as:
• Why Drill Bits Fail
Example: Why do some drill bits break even when using “good steel”?
• How Different Geometries Affect Performance
• Common Mistakes in Stainless Steel Drilling
• Heat Treatment & Why It Matters
• Packaging Details That Reduce Customer Complaints
…and more.

We'll post articles in our website-News Page:
https://www.jiachengtoolsco.com/news/

No matter your role in the industry — distributor, importer, brand owner, factory, engineer, or end user — we’d love to hear from you.

What’s your role, and what topics would you like to learn more about?

Leave your thoughts in the comments 👇

08/05/2026

A good supplier doesn’t just sell products.

They reduce problems.

Stable quality.
Predictable production.
Reliable delivery.

That’s what industrial customers really buy.