MHW 3BOMBER Impact Tamper, Astra Series (T7017-OS)

The Astra series from MHW 3Bomber uses solid metal materials as a base, combined with a dark color scheme. The improved galvanic technology allows for the unique black color "Obsidian".

By tamping, the coffee grounds in the portafilter are compacted to create a firm and even coffee puck with a smooth and level surface. Proper tamping avoids channeling effects and achieves a uniform extraction of the entire coffee grounds, thereby dissolving all the aromatic compounds from the coffee.

The Astra Impact Tamper is a pressure-regulated tamper with a preset pressure of 13.6 kg. When the preset pressure is reached, a mechanical signal sounds as feedback, and the tamper releases the pressure. After several trials, MHW 3Bomber found that at a constant pressure of 13.6 kg, the extraction rate is nearly the same across different amounts of coffee grounds and extraction times. The outer ring, which rests flat on the portafilter, ensures that the tamper is always pressed straight down. The tamper is simply placed on top and pressed down, with the spring pulling the base back up.

This tamper fits perfectly on 53 mm portafilters.
Through repeated tests, MHW 3Bomber has determined that 53.35 mm is the perfect size for leveling tools and tampers. These fit precisely into 53 mm portafilters and reduce coffee ground waste.

The tamper features an ergonomic handle and feels good in the hand. Additionally, the base is equipped with concentric grooves, allowing more coffee grounds to come into contact with the water, leading to better extraction.

The entire tamper is made from high-quality materials. The handle and middle part are made from an aluminum alloy, while the base and spring are made from stainless steel (SUS304). A replacement spring is included.
The entire tamper is disassemblable and can therefore be easily cleaned.

With this tamper, perfect coffee extraction can be achieved with proper use.
1x Impact Tamper, Astra Series
1x Replacement Spring
1x Silicone Cap

• Pressure-regulated tamper
• No channeling effect and uniform extraction
• Concentric grooves for better extraction
• Fits 53 mm portafilters
• High-quality materials
• Ergonomic handle