Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


gchiu

1211 posts

Uber Geek

Trusted
DR

#255751 27-Aug-2019 16:45
Send private message

I want to build some raised beds using Redwood sleepers and roofing iron. The instructions call for 100 X 100 posts but I only see 200 X 100 at Bunnings and they don't rip.

I don't have a bandsaw.

Does anyone do this in Wellington?

View this topic in a long page with up to 500 replies per page Create new topic
 1 | 2

mdf

mdf
3355 posts

Uber Geek

Trusted

  #2306860 27-Aug-2019 16:53
Send private message

I got some of these the last time they were on sale. If yours are the same as mine, I don't think they will last very long in the ground. They're not treated and are pretty soft. Unless you're going to see them, I'd just use fence posts.


 
 
 

Backblaze Unlimited Backup. World’s easiest cloud backup. Get peace of mind knowing your files are backed up securely in the cloud (affiliate link).
gchiu

1211 posts

Uber Geek

Trusted
DR

  #2306865 27-Aug-2019 17:07
Send private message

They're not going to be in the ground.  They just form the four corners of the raised bed as posts, and the roofing iron is nailed into them. I'll likely elevate the posts on some pavers to keep them off the ground.

 

This is sort of the plan https://gardengidget.wordpress.com/2010/09/01/raised-planter-beds/


Handle9
10113 posts

Uber Geek

Trusted
Lifetime subscriber

  #2306910 27-Aug-2019 18:08
Send private message

If you really want to use sleepers rather than posts why bother ripping them? They'll still work as 200 x 100.




nickb800
2699 posts

Uber Geek

Trusted

  #2306919 27-Aug-2019 18:45
Send private message

Will take a pretty grunty band saw to cut that. I'd offer to help with my table saw but with a 254mm blade the max depth of cut is 80mm.

Ruphus
407 posts

Ultimate Geek


  #2307025 27-Aug-2019 20:25
Send private message

Will you be filling in the raised beds with compost?

Bung
5666 posts

Uber Geek

Subscriber

  #2307065 27-Aug-2019 22:08
Send private message

Handle9:

If you really want to use sleepers rather than posts why bother ripping them? They'll still work as 200 x 100.



At the price of redwood you'd want them on the outside where they could be seen if you were leaving them whole. Alternatively putting pine fence posts on the outside would also be a way of keeping treated timber out of the garden if that concerned you.

My 210mm circular saw would do it in 2 or 3 passes, just keep the rip guide on the same face when flipping the timber over.

Journeyman
1121 posts

Uber Geek


  #2307092 27-Aug-2019 23:15
Send private message

Oh man... did anyone else read the title and think this thread was about drugs?

 

 

 




itxtme
2068 posts

Uber Geek


  #2307100 28-Aug-2019 00:58
Send private message

Going off the plan the sleepers are hidden... Dont use sleepers you are waisting your dollars.  Use treated pine posts which have been shown to leach at levels safe for human consumption ie. not much


gchiu

1211 posts

Uber Geek

Trusted
DR

  #2307151 28-Aug-2019 09:57
Send private message

Redwood was chosen since it's a hardwood, but macrocarpa would also work, and so would cedar.

 

If you want to grow organic certified food then you can't use treated pine regardless of what the science may say.

 

It's not economic to use the 200x100 as they're fairly expensive.  But I guess it's a pain to rip them.  Maybe I'll be forced to use them as they are.  That would make it $14 per corner instead of $7.  ( I think I'll get 3 posts of 26" long out of 2.4m sleepers at $42 per sleeper ).  I already have the roofing iron left over from house construction.

 

And yes, the beds are filled with soil, compost, etc.  Macrocarpa against soil lasts about 5 years. 


eracode
Smpl Mnmlst
7496 posts

Uber Geek

ID Verified
Trusted
Subscriber

  #2307158 28-Aug-2019 10:04
Send private message

Do you have, or can you borrow or hire, a circular saw? I think large ones will cut to 100 mm depth. Mine only goes to about 75mm - so if I want to rip 100 mm, I do one pass, then turn the timber over and make a second pass on the other side. Not hard to do.




Sometimes I just sit and think. Other times I just sit.


gchiu

1211 posts

Uber Geek

Trusted
DR

  #2307162 28-Aug-2019 10:10
Send private message

Good point. Mine can do 60 mm so I can try that.


mdf

mdf
3355 posts

Uber Geek

Trusted

  #2307164 28-Aug-2019 10:18
Send private message

The redwood I've got cuts niceley (and planes beautifully). Which is why I'm a little concerned about how long it will last in ground. 


nickb800
2699 posts

Uber Geek

Trusted

  #2307246 28-Aug-2019 12:39
Send private message

While you're ripping them down, could you form them into an L -shape (50mm deep cut on two adjacent sides to remove 50x50mm 'slice') and have the wooden L on the outside of the corners? That would reduce contact with soil and hopefully extend the lifespan


neb

neb
9358 posts

Uber Geek

Trusted
Lifetime subscriber

  #2307381 28-Aug-2019 15:50
Send private message

If you really want to use redwood and you're worried about rot, you could also try something like an epoxy sealant on it, or an oil-based sealer, or...

 

 

In terms of organicness, if you're using galvanised steel for the walls doesn't that destroy the organicity? I'd also be nervous about how long steel, no matter how it's treated, will last in contact with the ground. Maybe fibrolite?

gchiu

1211 posts

Uber Geek

Trusted
DR

  #2307404 28-Aug-2019 17:04
Send private message

I was thinking of standing the redwood posts on pavers to keep it off the soil.  Or, I could char the bottom of the wood to harden it and prevent rot, and also char the sides in contact with the compost.  I have a flame weed killer that I can use to char the wood, and create a torrefied layer.


 1 | 2
View this topic in a long page with up to 500 replies per page Create new topic





News and reviews »

One New Zealand Extends 3G Switch-off Date
Posted 11-Apr-2024 08:56


Amazon Echo Hub Review
Posted 10-Apr-2024 18:57


Epson Launches New Versatile A4 Desktop Scanners
Posted 10-Apr-2024 15:31


Motorola Mobility Launches New Android Phones in New Zealand
Posted 10-Apr-2024 14:59


Logitech G Unveils the PRO X 60 Gaming Keyboard
Posted 9-Apr-2024 19:01


Logitech Unveils Signature Slim Keyboard and Combo
Posted 9-Apr-2024 13:33


ExpressVPN Launches Aircove Go Portable Router With Built-in VPN
Posted 26-Mar-2024 21:25


Shure MoveMic Review
Posted 25-Mar-2024 12:47


reMarkable 2 Launches at JB Hi-Fi New Zealand
Posted 20-Mar-2024 08:36


Samsung Galaxy S24 Ultra review
Posted 19-Mar-2024 11:37


Google Nest Wifi Pro Review
Posted 16-Mar-2024 11:28


Samsung Galaxy A55 5G and Galaxy A35 5G
Posted 12-Mar-2024 12:41


Cricut EasyPress Mini Zen Blue launches at Spotlight New Zealand
Posted 12-Mar-2024 12:32


Logitech Introduces MX Brio Webcam
Posted 12-Mar-2024 12:24


HP Unveils Broadest Consumer Portfolio of AI-Enhanced Laptops
Posted 3-Mar-2024 18:09









Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.







Backblaze unlimited backup