Custom 3D Printing Services for Engineers — SLS, DMLS & Conformal Cooling Mold Inserts
Functional metal and plastic parts for engineers — from print-readiness review to first article inspection, handled by one accountable team.
- SLS / DMLS / SLA / FDM — Metal & Plastic Functional Parts
- Conformal Cooling Inserts for Cycle-Time Reduction (20–80%)
- NDA-First · 4–15 Business Days · In-House CMM Inspection
What KTM Delivers
KTM coordinates five 3D printing processes for B2B production — SLS, DMLS/SLM, SLA, DLP, and FDM — covering functional plastic and metal parts from prototype to small-batch production. Every part is inspected in our in-house metrology lab before shipping.
All processes supported by in-house post-processing: sanding, sandblasting, epoxy coating, electroplating, and vapor smoothing.
For materials, tolerances, and lead times by process, see the Materials & Capabilities Matrix.
Our Technical Focus — Conformal Cooling Mold Inserts
KTM is a mold shop that added 3D printing — not the other way around. We design, produce, and validate conformal cooling inserts inside our own injection and die-casting molds.
In-House Metrology Lab
CMM inspection before every shipment
| Process | Use Case |
|---|---|
| SLS | Functional nylon parts, living hinges, complex internal features |
| DMLS / SLM | Metal parts for aerospace, automotive, medical tooling |
| Conformal Cooling Inserts | Cycle-time reduction in injection molds and die-casting dies |
| SLA / DLP / LCD | High-detail prototypes, investment casting patterns |
| FDM | Concept models, visual mockups, low-cost fixtures |
SLS 3D Printing Service — Functional Nylon Parts in Production-Grade PA12
What SLS Solves
Our SLS 3D printing service supports end-use and low-volume production across, Selective Laser Sintering builds functional nylon parts layer by layer in a powder bed — no support structures, no assembly seams. Choose our SLS 3D printing service for complex internal channels, snap fits, living hinges, or low-volume end-use parts where injection molding cannot justify tooling cost.
Standard materials: PA12 (workhorse), PA12-GF (glass-filled, higher stiffness), and TPU (flexible elastomer).
Tolerances
Standard
±0.2–0.3 mm
as printed
Critical features
±0.1 mm
with secondary machining
For Ra values, build envelope, and lead times, see the Materials & Capabilities Matrix.
Materials Available
PA12
Workhorse nylon material
PA12-GF
Glass-filled for higher stiffness
TPU
Flexible elastomer
Industries We Serve with SLS
Automotive
air ducts, intake manifolds, under-hood housings
Consumer Electronics
enclosures, internal mounts, cable management
Industrial Equipment
jigs, fixtures, custom tooling
Medical Devices
(non-implantable only) — surgical guides, instrument trays, lab fixtures
Each shipment includes CMM dimensional data, material certificate, and surface finish verification.
DMLS / SLM Metal 3D Printing — Titanium, Stainless Steel & Aluminum Parts
DMLS vs SLM — What's the Difference?
DMLS (Direct Metal Laser Sintering) and SLM (Selective Laser Melting) are sister processes — both fuse fine metal powder layer by layer with a high-power laser. SLM achieves full melting and is typically used with pure metals; DMLS sinters alloy powders and suits multi-element steels and superalloys. Parts perform equivalently for most engineering applications, and KTM coordinates both based on alloy.
Tolerances & Post-Processing
As printed
±0.1–0.2 mm
After CNC finishing
±0.025–0.05 mm
see our CNC machining for tight tolerance parts
Available post-processing:
Industries We Serve
Metal Materials Available
KTM supports all three alloys — titanium, stainless steel, and aluminum 3D printing service — through the same engineering pipeline and QC standards.
Ti6Al4V
~950 MPa
Stainless Steel 304 / 316
~500–600 MPa
17-4 PH
~1,000+ MPa after H900
AlSi10Mg
~330 MPa
Compared with standalone metal 3D printing companies, KTM handles the full chain in-house: print coordination, CNC post-machining, optional grafted assembly for hybrid metal components, and final dimensional verification in our metrology lab.
Send drawings, 3D files, and material specs
NDA on request
Conformal Cooling Mold Inserts
Conformal Cooling Mold Inserts — 3D Printed for Cycle Time Reduction
Why Conformal Cooling?
Traditional cooling lines are straight-drilled holes that cannot follow curved cavity surfaces. Conformal cooling channels are designed to follow the part geometry, sitting at a uniform distance from the mold surface. The result: faster, more even heat extraction, fewer hot spots, less warpage, and shorter injection cycle times.
20–40%
Typical Reduction
up to 80%
Case-Specific
Conformal vs Conventional — Side-by-Side
Real-World Results from KTM Projects
Outcomes are highly part-specific. Across documented KTM projects, conformal cooling inserts typically deliver cycle time reduction in the 20–80% range, with proportional improvements in scrap rate and surface warpage.
A plastic automotive housing suffered long cycle times because conventional drilled cooling could not reach a hot zone deep inside the core, causing sink marks on the visible surface. KTM redesigned the core insert with conformal channels and produced it via DMLS for direct integration into the existing mold.
Outcome:
cycle time reduced significantly and sink marks eliminated.
[Specific Before/After data available during print-readiness review under NDA.]
A bent slider/ejector insert in a complex injection mold could not be cooled by straight-drilled lines, causing localized overheating and accelerated slider wear. KTM produced the cooling section using grafted construction — a CNC-machined steel base joined to a DMLS-printed top containing the conformal channels.
Outcome:
local overheating eliminated, slider service life extended, existing mold base retained (avoiding full mold redesign cost).
KTM provides project-relevant before/after measurements during the print-readiness review for your specific part.
Insert Design Parameters We Recommend
Channel diameter: φ6–φ12 mm (round or elliptical preferred to minimize flow resistance)
Distance from cavity surface: 1.5–2× channel diameter, kept uniform for even heat extraction
Wall thickness — channel to cavity surface: ≥ 3–5 mm
Wall thickness between adjacent channels: ≥ 3–5 mm
Bends: smooth radii or 45° transitions only — no 90° sharp corners
Channel length per segment: typically ≤ 500 mm for a φ3 mm channel; scaled accordingly
Cross-section consistency: maintain uniform channel cross-section throughout
Construction options:
Full DMLS
entire insert printed in one piece when geometry requires it
Grafted construction ★
CNC-machined steel base joined to a DMLS-printed cooling top (used in most production cases)
Grafted Construction ★
CNC-machined Steel Base
Joined
DMLS-printed Cooling Top
How KTM Integrates Inserts into Your Mold
Print-readiness review of cooling design and insert geometry
Insert production — full DMLS or grafted construction, based on geometry and budget
CNC finishing of mating surfaces, water inlets, and sealing faces
Heat treatment + dimensional validation at our metrology lab
Integration into the KTM injection mold or die-casting tool, with trial shots before release to injection molding production
When 3D Printed Mold Inserts Make Sense
Hot spots in the current mold causing surface defects or sink marks
Long cycle times limiting throughput on high-volume parts
Complex geometry — deep cores, curved surfaces, thin ribs — where straight-drilled cooling cannot reach
Parts where every second of cycle reduction translates to measurable annual ROI
When the existing steel base is sound and only the cooling section needs redesign — grafted construction delivers conformal performance at a fraction of full-DMLS cost
Are 3D Printed Mold Inserts Good for Production?
Insert-style 3D printed mold inserts integrated into a steel mold base are production-grade and run reliably in high-volume tooling. Full-polymer 3D printed molds are best limited to short-run or bridge tooling. KTM produces the insert-style approach for production injection molding.
Send your existing mold design or part drawing
Materials & Capabilities Matrix — All Technologies at a Glance
A scannable reference for engineers comparing options across all KTM 3D printing processes.
Quality Control & Inspection Documents
Quality Control & Inspection Documents — Validated Before Every Shipment
Our In-House Metrology Lab
KTM operates a dedicated in-house metrology lab. Every 3D printed part — whether produced by us directly or through KTM's qualified manufacturing network under our QC standards — is inspected here before it ships.
Inspection equipment available on-site:
CMM (Coordinate Measuring Machine)
full 3D dimensional verification
2D Vision Measurement system
Optical projector
Pin gauges, plug gauges, go/no-go gauges
Calipers, micrometers, height gauges
Material hardness testers
What's in Every Inspection Report
- Dimensional report with CMM data on critical features
- Material certificate for traceability
- Surface finish verification (Ra value where specified)
- Visual inspection records
- Photo documentation of critical features
Sample Reports You Can Review
We can share a redacted sample CMM dimensional inspection report on request, so you see the format and data depth before placing an order.
Redacted Sample Report Available
In-House Metrology Lab
ISO 9001:2015 Certified
How to Start Your 3D Printing Project
From Quote to Delivery in 5 Steps
One partner, one quote, one engineering team responsible end-to-end. Fast English communication for daily updates, with engineering escalation when technical questions arise. NDA is signed before any drawing or 3D file is reviewed.
| Step | Action | Timeline |
|---|---|---|
| ① | Submit RFQ — Send drawings, STEP/STL files, material & quantity. NDA signed first if requested. | Day 0 |
| ② | Print-readiness review — KTM engineering team checks manufacturability and recommends process & material. | 1–2 business days |
| ③ | Quote locked — Transparent pricing covering print, post-processing, inspection, packaging, export documentation. | Within 24-48 hours of review |
| ④ | Production with progress reports — 5 milestone updates: file confirmation → production start → post-processing → QC complete → shipment. | 4–15 business days |
| ⑤ | Delivery with full inspection report — CMM data, material cert, surface finish verification. | Per agreed Incoterm |
Why KTM
KTM is a technology-led mold factory that now coordinates 3D printing for B2B production. Founded by a mold-design specialist with 20+ years of hands-on experience, we engineer, produce, inspect, and integrate every 3D printed part under one accountable team — from print-readiness review to first article inspection.
KTM End-to-End Workflow
Single-Source Accountability for 3DP + Mold Integration
KTM delivers more than a printed part — every project includes mold integration validation when applicable, and production-grade backup through our injection molding and die-casting tooling capability. One partner, one quote, one engineering team responsible end-to-end.
Real Mold Application Experience — Not Just Theory
We integrate 3D printed conformal cooling inserts into our own injection and die-casting molds. Documented results include cycle time reduction in the 20–80% range and proportional yield improvement — project-specific, depending on part geometry and current cooling design. We use 3D printing in our own molds — that's why we know what works in production.
In-House Metrology Lab for Every Part
CMM, 2D vision, optical projector, gauges, hardness testers — all on-site at KTM. We don't print and ship blind. Every part inspected and validated in our in-house metrology lab before shipping.
20+ Years of Mold Engineering Behind Every 3DP Project
The factory is founded and run by a mold-design specialist with 20+ years of hands-on factory experience. Sales coordinators handle daily English communication; the engineering team (10+ years average experience) escalates on complex technical questions.
Long-Term Customers Across US, Mexico, Canada & Europe
We serve B2B customers in Automotive, Aerospace, Medical Devices (non-implantable), Consumer Electronics, Industrial Equipment, and Home Appliance. Several relationships 10–15 years, Partnerships measured in years, not transactions.
Serving B2B Customers Worldwide
Automotive · Aerospace · Medical Devices · Consumer Electronics · Industrial Equipment · Home Appliance
Pricing Framework
Pricing Framework — What Drives Your 3D Printing Cost
We don't hide the math. Five variables determine your metal 3D printing price or plastic part quote — understand these and you can predict the answer to how much does metal 3D printing cost before you submit your RFQ.
All quotes are fully itemized and locked under our transparent pricing terms — see the Quote Locked commitment below.
Risk Reversal — 4 Commitments
Our 4 Commitments — How KTM Removes Your Risk
Confidentiality Assured — NDA First
Your design IP stays yours. We sign your NDA before any drawings or 3D files are reviewed. Files stored in encrypted, need-to-know access. Upon project completion, you can request file deletion in writing.
Transparent Pricing — Quote Locked
Your quote includes printing, post-processing, inspection, packaging, and export documentation. Price is locked once the order is confirmed — as long as drawings, 3D files, and specifications remain unchanged. Any change order is fully quoted in writing before we proceed.
Progress Reports — You Always Know Where We Are
Five milestone reports keep you informed: ① drawing/3D file confirmation ② production start ③ post-processing ④ QC complete ⑤ shipment. Weekly updates for longer projects. Engineering escalation when complex technical issues arise — no black-box production.
Quality Resolution Process — We Make It Right
If a part doesn't meet spec, send photos and measurement data. Our engineering team assesses within 48 hours and proposes a resolution — rework or remake based on root cause. Every concern tracked from report to closure with documented decision rationale.
Frequently Asked Questions
Common questions from engineers and procurement teams about 3D printing services and conformal cooling.
What is your typical lead time for 3D printed parts?
Typical lead time ranges from 4 to 15 business days depending on process, part complexity, quantity, and post-processing. SLA/FDM prototypes ship fastest (4–7 days); DMLS metal parts and conformal cooling inserts run 7–15 days. Rush options are available on request.
Can KTM design conformal cooling inserts that fit my existing injection mold?
Yes. Send your mold drawing or part data; we run a print-readiness review, produce the insert as full DMLS or grafted construction (steel base + printed cooling top), CNC-finish the mating faces, and validate dimensional fit before integration into your mold or our injection molding production.
What inspection reports does KTM provide with every shipment?
Every shipment includes a CMM dimensional report, material certificate, surface finish verification (Ra), visual inspection records, and photo documentation of critical features. All inspections are completed in our in-house metrology lab.
Do you sign NDAs and protect confidential design files?
Yes. We sign your NDA before any drawing review. Files are stored with encrypted, need-to-know access only. You can request written file deletion at project closure.
What is the difference between SLM and DMLS?
SLM (Selective Laser Melting) fully melts metal powder, typically pure metals. DMLS (Direct Metal Laser Sintering) sinters alloy powders for multi-element steels and superalloys. Engineering performance is equivalent for most applications. KTM coordinates both based on alloy.
What is conformal cooling vs conventional cooling?
Conventional cooling = straight-drilled holes; conformal cooling = channels following the part contour at uniform distance. Conformal reduces hot spots, cycle time, and warpage at higher up-front cost. KTM design rules: φ6–12 mm channels, 1.5–2�� diameter from surface, ≥3–5 mm walls, smooth bends only.
How accurate is DMLS, and what tolerances can KTM hold?
As-printed DMLS tolerance is ±0.1–0.2 mm. After CNC machining for tight tolerance parts, critical features can be brought to ±0.025–0.05 mm. We confirm achievable tolerance per feature during the print-readiness review.
Are 3D printed mold inserts good for production injection molding?
Insert-style — yes, production-grade and reliable in high-volume steel tooling. Full-polymer molds — limited to short-run or bridge tooling. KTM produces insert-style for production.
When should I choose 3D printing over CNC machining?
Choose 3D printing for complex internal channels, lattice structures, organic geometries, and low-quantity functional parts. Choose CNC machining for tight tolerance parts for high-precision features, large quantities, or standard machinable shapes. Many parts use both — print first, then CNC the critical surfaces.
How much does metal 3D printing cost, and what drives the price?
Metal 3D printing cost is driven by five factors: process (DMLS > SLS), material (titanium > stainless steel > aluminum), part volume and complexity, post-processing, and quantity/lead time. See the Pricing Framework for detail; submit drawings for a transparent locked quote.
Ready to Start Your 3D Printing Project?
Submit your drawings, STEP/STL files, or part specs — KTM signs NDA before review. Our engineering team responds within 24-48 hours with a transparent, locked quote.
Direct contact:
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