3 domains

Hi BHW I have 2 domains one with a 1000 backlinks and another with none, I want to buy a new domain and then do a 301 on the site with a 1000 backlinks to my new domain (same niche)

Then use scrape box to get 40k back links on the 2nd domain (same niche again) then do a 301 to the new domain.

but would my new site be sandboxed because it would gain over 40k backlink in less than a day?

Yes probably. Take it slow man. Focus on quality and not quantity.

If you're using a new domain that hasn't been indexed on the SE yet, it's likely that you'll be sandboxed anyway. I think what you're asking is whether gaining 40k backlinks in less than a day will look suspicious in the eyes of the Google robot. The answer is yes. You can try, but there is no guarantee it will work out.

I think you should go slow in the beginning making few backlinks and after seeing the results keep increasing the number of links.It'll definitely be sandboxed if you use 40k links in a day so be cautious.

lol thanks, I only asked because the new domain wont technically have back links they would be redirects from 2 other domains. I think I will take it slow though