Category Archives: DIY

Upgrading my Oscar Espresso Machine

The Nuova Simonelli Oscar Espresso Machine is one of the best professional home machine you can find. The price is reasonable for the Malaysian market. It is not too heavy, around 18kg. Huge 2litre boiler. Plenty of powerful steam to make excellent cappuccino and latte. Commercial grade brew head and a Heat-Exchanger machine that allows you to brew espresso and froth milk at the SAME time. Specifications here.

But there are 2 “flaws’ with the Oscar.

1. The 4-holes steam tip
2. Brewing pressure

Steam Tip Problem
The original 4-holes tip has a very wide angel of dispersion. Trying to make microfoam has been really difficult. Many of us has resort to plugging a hole or 2 with toothpick. The toothpick idea does work. I plug one hole and has been able to make good microfoam. It still requires a steady hand and full concentration to achieve perfect velvety smooth frothed milk.

Finally, Irving and I got ourselves a NEW 2-holes Isomac steam tip and microfoaming has become a piece of cake.

Here is how it looks like:

High Brewing Pressure Problem
Another problem for espresso lovers are the brewing pressure. The original settings of the Oscar came with a brewing pressure of around 13 to 14 BAR. The official recommendation of espresso extraction is set at 9 Bar.

The overly high pressure resulted in espresso that is slightly more bitter and less sweetness. After we installed in an OPV (Over-Pressure Valve), the improvement is definitely noticeable. Using my favourite Supremo Highlander Blend, the improvement is obvious, less bitter and much livelier.

Do note that if you are not  a regular espresso lover and drink mostly cappuccino or latte, you will not notice much difference and this issue may not concern you at all.

Here’s what happened when Irving installed the OPV on my Oscar Espresso Machine.

Before the setup.

Installing the T-Joint

The OPV is on the right of the T-Joint.

The final measure of the pressure. It is NOW at 9Bar. (I forgot to take a pic of the original settings at 13Bar)

If you have an Oscar Espresso Machine that is more than 1 year (after warranty), you may want to consider doing the upgrade.

The New 2-holes Steam Tip cost RM55.00

The OPV cost RM200 + RM150 for installation charge.

DIY a Knockbox under RM10

This is a DIY project from our friend Irving.


This is what I call a savvy. I always have this admiration for people who can DIY. I’m really one of those DIY idiot who can seems to make anything with my hands.. except coffee 🙂

I remember when I was in secondary school, my best friend Oliver who is another DIY genius, gave me one of those air-craft model that came in many plastic pieces. I totally make a mess of it. My best result is an airplane similar to the one from LOST, if you know what I mean.

Ok, here’s the step to a functional and cheap knockbox.

From Irving:

Anyway, as promised, here are some pics of the knock box I’ve made for under RM10 I told you about. Here are the list of materials:
1) Swordman plastic container RM3.90
2) Handle of a cheap pine-wood spatula (Spatula costs about RM3 from pasar malam).
Problem is I’m not sure where to get them now
3) Rubber tube from a car door edge bumper – I replaced mine for RM6.90 (for 4),
and I used the old one for the knockbox. So you can say it’s RM1.75 for this

Knockbox in Action.

Hey Irving, make me one lah… pleaseeeee… I compensate with a pack of 250g Supremo blend ok ar?