Bus workers in Cardiff struck against low pay on Wednesday and Saturday of last week.
Only 20 buses out of 180 made it onto the road on Saturday.
They were staffed by supervisors, trainees, two scabs and a handful of Unison union members.
Striking Unite union members have rejected their bosses’ pay offer of 3 percent in 2015 and 2 percent next year.
They are demanding 4 percent from the bus company, which is owned by Cardiff council.
And their action is growing in strength—the second walkout on Saturday was much stronger than the first on Wednesday.
Workers were jubilant on the picket lines and were boosted by obvious public support.
Cars tooted their horns in support and a total stranger brought drivers a box of hot pies.
Twenty bus workers marched to the National Museum of Wales picket lines as part of a “picket swap”.
The PCS union members went to the National Musuem’s St Fagan’s site for a demonstration.
Around 300 bus workers assembled in Callaghan Square at lunchtime. They marched to the National Museum for a strike rally to chants of “No more lies, give us a rise”.
All the staff in one coffee shop stopped work and came out onto the street clapping.
Unite plans further 24-hour strikes on 23 September and 11 October and three 48-hour strikes 19 September and 1 and 17 October.
The union is targeting days with international rugby matches to cause maximum disruption.