Alternate top/bottom plates - aluminum tooling plates

Alternate top/bottom plates - aluminum tooling plates

Postby Jason Fisher » Fri Dec 27, 2013 8:36 am

Found these pre-drilled aluminum tooling plates on eBay, and at a glance it looks like the holes are pre-drilled in the correct arrangement and the plate might make a good alternative to MDF/plywood? ~$20 for 14 3/4" diameter or ~$40 for 16 9/16" diameter and very thick..

http://www.ebay.com/itm/1-Aluminum-Disc ... 19cfc11d02

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Last edited by Jason Fisher on Fri Dec 27, 2013 10:06 am, edited 3 times in total.
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Pizza pans

Postby Jason Fisher » Fri Dec 27, 2013 8:51 am

Last edited by Jason Fisher on Fri Dec 27, 2013 10:04 am, edited 4 times in total.
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Water heater pans

Postby Jason Fisher » Fri Dec 27, 2013 9:04 am

Water heater pans are a bit larger -- 26"-30" diameter $30 - $60. Water heaters are actually probably a good maximum size for an indoor printer .. and a junked one may make an interesting heated LISA enclosure? Mount the water-heater off the ground a bit so the steppers/electronics can sit underneath.. if you use PLA/something acetone friendly for printed parts, maybe you could feed acetone vapors into the enclosure for ABS part smoothing.

http://www.amazon.com/Oatey-34187-Alumi ... heater+pan

http://www.amazon.com/Camco-20860-Alumi ... tream_4_dp


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http://www.ebay.com/itm/Oatey-34103-28- ... 565f54e108

Water heater capacity to dimensions conversion chart, sizes likely generic but this could be brand specific:
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I want a 75-gallon LISA. :)

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Last edited by Jason Fisher on Fri Dec 27, 2013 9:42 am, edited 3 times in total.
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Saucer sleds

Postby Jason Fisher » Fri Dec 27, 2013 9:35 am

26" diameter steel saucer sled, 6 lbs, available in colors, $35 with free shipping:

http://www.amazon.com/Flexible-Flyer-26 ... tal+saucer

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Handles are nice. And that helmet is probably right within the usable build area. ;)
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55-gallon drum lids

Postby Jason Fisher » Fri Dec 27, 2013 10:01 am

55-gallon drum lids are probably relatively inexpensive for their thickness.

$30-$40, 24" diameter, 9lbs, 18ga steel

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http://www.newpig.com/pig/US/unlined-re ... by_product

Buy a 55-gallon steel drum, build the LISA so it suspends from the lid, put the electronics on top of the lid and then you can lower it all into the bucket for a heated enclosure. ;)

On a side note, I've always wanted to design a printer that attached to opposite ends of the rim of a drum/bucket, with wheels that drove a single axis in circles while the head moves from one end of the axis to the other and drops with a screw to print off the bottom of the container. :)
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Re: Alternate top/bottom plates - aluminum tooling plates

Postby Nicholas Seward » Fri Dec 27, 2013 8:12 pm

Any flatstock will do. I like the thick aluminum in your first post.
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Re: Alternate top/bottom plates - aluminum tooling plates

Postby uncle_bob » Fri Jan 03, 2014 7:11 pm

So.... is the cast aluminum tooling plate flat enough / smooth enough to use as a heated bed? For the moment lets ignore the number of KW it would take to heat it and other minor issues....
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Re: Alternate top/bottom plates - aluminum tooling plates

Postby Nicholas Seward » Fri Jan 03, 2014 7:32 pm

I would assume they are flat enough.

FYI, the lead screws on 1X LISA are positioned 300mm apart. That puts them on about a 13.75" diameter circle.
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Re: Alternate top/bottom plates - aluminum tooling plates

Postby uncle_bob » Fri Jan 03, 2014 8:47 pm

I'm aiming for an oversized build, so a fairly large disk would work in my case, diameter wise. Whether or not there is a practical / rational / cost effective way to mount and heat a 35 lb slab of aluminum is TBD....
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Re: Alternate top/bottom plates - aluminum tooling plates

Postby Nicholas Seward » Fri Jan 03, 2014 9:00 pm

It doesn't matter how big it is. If you thermal epoxy one of these to the bottom and then throw some insulation below that you will be great. Mass and specific heat affect heat of times but the exposed surface area is only thing that will change your max temp. (Well, not quite but close enough.)
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