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We purchased a table with Duplo baseplates on top (activity table) for my son when he was 1 year old. He's now turning six and we would like to convert the Duplo top to the regular LEGO System top. is there a baseplate that has Duplo studs on the bottom (so it sticks and essentially covers the Duplo spaces) and regular LEGO System studs on the top (so that the table can be used with the regular LEGO System pieces. It seems like a shame to chuck the table.

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Don't forget to accept the answer if it works for you! – JW8 Jun 28 '14 at 18:59

To answer your question, no there is no such plate with DUPLO tubes on the bottom and LEGO studs on top. HOWEVER regular LEGO and DUPLO are completely compatible - as long as the regular LEGO bricks are at least 2x2 studs. Just cover the DUPLO table with regular LEGO bricks and you are done...(c;

You could actually use regular LEGO plates too, however the connection won't be as secure as with regular LEGO bricks as plates are much thinner so won't go all the way down to cover the LEGO studs. But they do fit, and their benefit is that they cover a much larger area so you would need less.

Here is an article and some visual examples of how LEGO and DUPLO fits together very nicely:

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you are awesome!!!! I'm going to try that just have to scrounge enough flat duplo plates 2x4 to fill the top :) thanks! The reason for this is that that top has solid rounds and not the originall duplo round to connect to the system so your idea worked when I placed the flat duplo on top first and then use the regular system bricks :) so I am figuring if I get a could of duplo base plates and put them on top first, the table would be good to go I think :) – Marisabel Jun 21 '14 at 14:09
Marisabel, that sounds like a plan! You can get some quite large DUPLO plates on BrickLink so you don't have to work with a lot of smaller ones (4x8, 6x12, 8x8 and 8x16). It is just something to consider investing in in the future. You can find them here:… – TheBrickBlogger Jun 21 '14 at 14:22
You can use the large bricks such as the 12x24 to build the surface of the table. This will give it better stability and should bind correctly to the underlying duplo, plus it saves time in assembly. – Mr. Shiny and New 安宇 Jul 5 '14 at 2:10

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