Ikea Lack table stacker-seamless. no need hardware if desired

However, if wanting to increase height, screws are required

Really sturdy!

print in place, no need supports

screws used:

plate 1: stackable lack legs. Seamless

plate 2:extender bracket 

plate 3: combo of 1 and 2

if in australia: Zenith 8G x 20mm Galvanised Button Head Stitching Timber Screws - 30 Pack

[https://www.bunnings.com.au/zenith-8g-x-20mm-galvanised-button-head-stitching-timber-screws-30-pack_p2410092?region_id=118161&gad_source=1&gclid=Cj0KCQjwkZm_BhDrARIsAAEbX1Ek7HhRwgEE5og6m1UVmHOPEbat-VUcNwrZAGF91mvOdo0E3VQB8hMaApDZEALw_wcB&gclsrc=aw.ds](https://www.bunnings.com.au/zenith-8g-x-20mm-galvanised-button-head-stitching-timber-screws-30-pack_p2410092?region_id=118161&gad_source=1&gclid=Cj0KCQjwkZm_BhDrARIsAAEbX1Ek7HhRwgEE5og6m1UVmHOPEbat-VUcNwrZAGF91mvOdo0E3VQB8hMaApDZEALw_wcB&gclsrc=aw.ds) 

if worldwide: BCP Fasteners #8 x 3/4", 100 Qty Phillips Small Black Modified Truss Head Screws, Deep Thread Sharp Point, Carbon Steel Black Phosphate Coated Self-Tapping Screws for Wood & Metal (BCP1078)

[https://www.amazon.com/BCP-Fasteners-Phillips-Phosphate-Self-Tapping/dp/B084X4QVLX/ref=sr_1_4?content-id=amzn1.sym.918a99dd-4826-4c0a-be33-a6705d69c4cf%3Aamzn1.sym.918a99dd-4826-4c0a-be33-a6705d69c4cf&crid=A29XTTGDE1F2&dib=eyJ2IjoiMSJ9.83OtPDhXLr-vSwArFbx7gfxO4g5xiO-ZSFR6CBHeLJdWaMHq8mT8UqaaOQatAvAbqnl-jkIqIfTDXToAhOKxx8wDeAE_yCSayfi9pm3JKtWQuDmxm71aUjSukKDqrDa5EWBkFcS3vEDfOXPjcBWGz-751ox6zKOgJM1CdywdLTjAHaV95SxV5WMWjFR9oMygZLVABOK8tCmIBhREfJKCxok3HyyKAMeigiQvTpWno-2Iiu5MprSjLUAMDFsnJdQeN_B3rNXy_srl82CY3JV2OKjZw3KlfR6I9BiwqU15pS3dOIE1AgMY2f3McNqLFvusI5ELMwnwTHn32e_hOPF2ECYhHzyB48aqKni2JfFguWM.8AyxQd5apQUPdZYH7fSxXXi8-H8YSCpSl-dHdZPUsX8&dib_tag=se&keywords=Screws&pd_rd_r=da907068-4e0b-4d9f-a197-af988afda225&pd_rd_w=JgffD&pd_rd_wg=G4D31&pid=5xIWVpJ&qid=1743172503&refinements=p_n_feature_two_browse-bin%3A2292869011&s=industrial&sprefix=button%2B20mm%2Bwood%2Bscrew%2Caps%2C328&sr=1-4](https://www.amazon.com/BCP-Fasteners-Phillips-Phosphate-Self-Tapping/dp/B084X4QVLX/ref=sr_1_4?content-id=amzn1.sym.918a99dd-4826-4c0a-be33-a6705d69c4cf%3Aamzn1.sym.918a99dd-4826-4c0a-be33-a6705d69c4cf&crid=A29XTTGDE1F2&dib=eyJ2IjoiMSJ9.83OtPDhXLr-vSwArFbx7gfxO4g5xiO-ZSFR6CBHeLJdWaMHq8mT8UqaaOQatAvAbqnl-jkIqIfTDXToAhOKxx8wDeAE_yCSayfi9pm3JKtWQuDmxm71aUjSukKDqrDa5EWBkFcS3vEDfOXPjcBWGz-751ox6zKOgJM1CdywdLTjAHaV95SxV5WMWjFR9oMygZLVABOK8tCmIBhREfJKCxok3HyyKAMeigiQvTpWno-2Iiu5MprSjLUAMDFsnJdQeN_B3rNXy_srl82CY3JV2OKjZw3KlfR6I9BiwqU15pS3dOIE1AgMY2f3McNqLFvusI5ELMwnwTHn32e_hOPF2ECYhHzyB48aqKni2JfFguWM.8AyxQd5apQUPdZYH7fSxXXi8-H8YSCpSl-dHdZPUsX8&dib_tag=se&keywords=Screws&pd_rd_r=da907068-4e0b-4d9f-a197-af988afda225&pd_rd_w=JgffD&pd_rd_wg=G4D31&pid=5xIWVpJ&qid=1743172503&refinements=p_n_feature_two_browse-bin%3A2292869011&s=industrial&sprefix=button%2B20mm%2Bwood%2Bscrew%2Caps%2C328&sr=1-4)