A Dedica portafilter is a 51 mm class, not a 58 mm Gaggia. HomeBaristaMods’ spring tamper is sold in 51 / 53 / 58.5 mm — you want the 51 SKU, not the 58.5 that 58 mm baskets actually want. The ranking Reddit thread is shopping a tamper and a portafilter for “the delongi,” which is how people mix Dedica 51 with “espresso 58.”
Stock Dedica baskets are often pressurized. Converting the cup is a different job.
The ranking post is a shopping cart
Organic #1 asks for a “good” tamper and portafilter together. Official DeLonghi accessory pages (DLSC058) sit under it as product SERP. Amazon 51 mm listings were skipped as evidence. The millimetre is the decision; the brand stamp is not.
| 宣称 | 真实 | 出处 | 差在哪 |
|---|---|---|---|
| Espresso tampers are 58 mm | Dedica is 51 mm | HBM size chart 51 / 53 / 58.5 | Platform |
| 58.5 “fits everything” | 58.5 is for ~58.3–58.5 mm baskets | 58.5 vs 58 | 7 mm of steel |
| Tamper fixes pressurized shots | Dual-wall still lies; change the basket first | Dedica convert article | Tool vs cup |
51 vs 53 vs 58.5 on this catalog
53 mm is a different machine family (some Sage/Breville 54-class cousins still need measuring). If you measured 51.0–51.5 mm inside the cup, order 51. Do not “split the difference” with 53.
The Bincoo ring is 51 and 58 mm (€19.90 funnel) — same split as the tamper, not a third diameter.
What a 51 mm tamper will not do
It will not turn a pressurized Dedica into a Classic. It will not replace WDT (distributor article). It will not make 30 lb necessary (30 lb myth). It fills the cup you have.
Frequently Asked Questions
What size tamper does a DeLonghi Dedica use?
51 mm class. HomeBaristaMods lists 51 / 53 / 58.5; Dedica is the first of those.
Will a 58.5 mm tamper work on a Dedica?
No. 58.5 mm is for 58 mm-class baskets. It will not enter a 51 mm cup.
Do I need a spring tamper for a Dedica?
Only if you want a repeatable collar. Diameter still comes first. The spring SKU exists in 51 mm.
Does Dedica tamper size change if I convert to non-pressurized?
Stay on 51 mm unless you also changed the portafilter to another machine’s diameter.
Is a Dedica 51 mm portafilter the same as a Gaggia 58 mm?
No. See 51 vs 58.
Tools: brewing tools.