Routing HPL

HPL or whole kernel is often referred to by the name Trespa®. Trespa® is originally a Dutch manufacturer of fiberboards. There are other well-known names such as Resopal and Abet on the market. The correct name for this material is HPL (High Pressure Laminate) or solid core. It is made from high-pressure compressed high-quality paper with melamine resin. An impermeable top layer is applied on both sides.
HPL or solid core is particularly strong, resistant to all weather conditions, is dirt-repellent and has a very high resistance to bending and breaking.

Tools for routing HPL

LMT ref.	Ketele ref.	D1	D2	L1	L2	Z	Helix
STRATR6	21083	⌀ 6 mm	⌀ 6 mm	50 mm	10 mm	3	Positive
STRATR8	21084	⌀ 8 mm	⌀ 8 mm	65 mm	18 mm	3	Positive

Other sizes and diameters of these tools for milling HPL can be found in the LMT Tools catalog on page 23 or contact us for more info.

Prior ref.	Ketele ref.	D1	D2	L1	L2	Z	Helix
H-4-6-9-64-3-P-N-0373	A33099	⌀ 4 mm	⌀ 6 mm	64 mm	9 mm	3	Positive
H-6-6-13-64-3-P-N-0373	A33100	⌀ 6 mm	⌀ 6 mm	64 mm	13 mm	3	Positive
H-6-6-20-64-3-P-N-0373	A33100	⌀ 6 mm	⌀ 6 mm	64 mm	20 mm	3	Positive

Other sizes and diameters of these tools for milling HPL can be found in the Prior Tools catalog on page 60 or contact us for more info.

Routing strategy for HPL

Material thickness	⌀ shaft	⌀ cutting edge	Feed	Speed RPM	Direction
10 mm	6 mm	6 mm	40 mm / sec	18.000 TPM	Conventional
10 mm	8 mm	8 mm	50 mm / sec	15.000 TPM	Conventional

Tip: When machining HPL, use a 3D entry of around 10°.
Lay the HPL sheets with the decorative side at the bottom so the positive helix of the cutter does not damage the layer when pulling up chips.

Depending on machine and spindle power, other values may apply.