Hi and thanks Dave, You had a thread going recently about where does one get timber for bases. I've always made bases for my boxes from the same timber the box is made from. Large boxes I usually have to rip some timber and glue a couple of pieces together and then drum sand them down to 4mm. My Gifkin rebate cutter is 4mm, as would most others on here be the same. These 23 boxes wont be that expensive so I didn't really want to muck around making up 4mm bases. I went up to Bunnings, they had some structural type 4mm ply, but finish was terrible, purely structural grade for walls of houses. They had some 3mm ply, with a very nice pine finish on it. Big sheet of it, not that expensive. I thought surely I must find a 3mm rebate cutter and bought the ply sheet. I looked everywhere online for an appropriate 3mm rebate cutter. Only found 1 on Amazon I think it was, a 1/8th rebate cutter. Bought it knowing the bearing would not be suitable for a 5mm deep rebate. When it turned up the bearing I needed did not exist, needed a 22mm OD and about a 4.7mm ID. (the bearing on it cut a 10mm deep rebate, great for 10mm timber eh!).
There is a bearing centre in Coffs,.......nothing even close.
Anyway, from my good ol friends Aliexpress I bought a 22mm OD, 8mm ID bearing, and also bought a brass/copper bush 8mm OD with a 4mm ID. Bush fitted perfectly into the bearing. I drilled out the 4mm hole and worked on it till I got it just right. Worked perfectly, and for these little boxes this base would more than suffice.
Paul