Hi! Sorry, it was just a total blonde moment! You're gonna need 4 of each, and I feel bad for messing up something so obvious! Typically, 1x4s should measure approx 3 1/2, and that's what I'd accounted for in the plan. Hopefully it's an easy fix for ya, and tell the husband I take full blame! :o) I built this last night. It took me about 3 hours. Since I wanted to have a bottom, I took a paint tarp and stapled it to the sides of the box so the sand has something to sit in and weeds won't push up through the sand. Thank you for the wonderful plans I don't know about a support. Maybe if you add one, you could take a picture to explain. Also, I didn't want to list the planks at 48" because not all boards are exactly 8', *and* if you cut one at 48", the blade takes up anywhere from 1/8"-3/16", so one would be shorter than the other. Not a big deal, but I wanted to make sure all bases were covered. Hi, I am really interested in making this for my daughter. However, I am concerned that this wont be very waterproof and the sand will end up getting waterlogged for when she comes to use it. How waterproof is the sandpit? Any ideas of how to make it more waterproof. This is an easy project to build and looks great. The only thing I changed was I cut my arm rests at 7 1/2" instead of 6 1/2". It made it very easy to build that section. No extra measuring or centering.

Everyone with a sand box knows that lids are a necessity. But double-duty lids are crazy awesome, especially if they convert to a seat! This easy to build sandbox with built-in seats is a reader favorite and has been built thousands of times.

I'm heading to Lowe's now to get some lumber to build one of these for my one Grandson for his birthday. The other suggestion is to make sure when you get the hinges the screws are not too long. I got gate hinges and the screws ended up coming through the 1x4 plank which meant you'd be sitting on them. Ouch! I exchanged the hinges for smaller galvanized versions. Hi there! We've actually not had ANY problems with that so far. The seat pretty much stays put until everything's lifted to close it, and I really don't think little kids will be able to do that. I have a pretty strong 6 year old that can get mine closed, but mine's only 2 feet wide. The added 2 feet will add weight that'll keep it safer from the kids moving it. Cleverly designed, the bench seats fold out to form a protective cover - ideal for keeping animals out and ensuring the sand inside is free from garden debris.

I was wondering why you specified a compound mitre saw as a tool needed? I have a DeWalt compound mitre saw, but I don't see any cuts that even require a mitre saw at all unless I missed something? Kidadl is independent and to make our service free to you the reader we are supported by advertising. I like you design, very clever and looks great. I am going to build one for my daughter over the coming weekend. There will be one more of your sandboxes build in the other side of the world - in Slovakia. Thanks for inspiration. On the lid, we ran into trouble with the 1/2" spacing. 12-1x4 without spacing would be 48". Even accounting for the fact that the 1x4s came up a bit less than 4, more like 3 3/4, we still ended up having to adjust everything at the end.Ive never really done a wood project before but I would like this to be 6ft x 6ft rather than the 4ftx4ft i think it is since I have my 2 kids and then their 3 cousins who come to play. The fame i can imagen would be easy to extend but I dont know what the measurements for the seats would have to be to make it a good fit to reach so that it will be able to be folded down like in this design since we have 2 large dogs who LOVE to take over the yard and do as they please. Could you please help me with a modified walk through so it can be bigger?I WOULD GREATLY APPRECIATE IT! p>With a Diploma in Education specializing in Fine Arts (Painting) and a Bachelor of Arts specializing in Illustration and Visual media from the University of Arts London, Sarah previously was a London-based teacher who brought her passion for art and culture to the classroom. Her creative endeavors include painting classes and experimenting with new recipes. She draws inspiration from the world around her and enjoys sharing her knowledge with others while sipping a cup of tea.