My mod

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BenN
Posts: 127
Joined: Tue 28 May, 2019 7:26 pm
Location: Nelson, New Zealand

Re: My mod

#824

Post by BenN » Wed 04 Mar, 2020 8:26 pm

Trying to find a shop to get the tube from in NZ, Thinking to go for 200mm long so I can get little longer mesh area. Although Damian's 150mm setup looks balanced,

I can wait until official one came out but looks easy enough to tinker, if I can get hold on to material. Is anyone in NZ done this mod?
Ben

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kaffelogic
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Posts: 299
Joined: Thu 18 Oct, 2018 9:38 am
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Re: My mod

#825

Post by kaffelogic » Thu 05 Mar, 2020 8:55 am

We were able to obtain small quantities cut to length and fire polished from the University of Otago Chemistry Dept.

Stuffa
Posts: 1
Joined: Tue 03 Mar, 2020 4:39 pm

Re: My mod

#826

Post by Stuffa » Sat 07 Mar, 2020 11:26 am

Damian wrote:
Thu 06 Feb, 2020 5:50 pm
I replaced the aluminum chimney with a glass tube (Borosilicate pyrex)
I can now view what the beans are doing easier.
I think I might make a hat type chaff catcher, to give even better viewing.

IMG_0490.JPG

beans.gif
Damian,
This is a great mod. Could you tell me where you purchased the glass and approx cost please

BenN
Posts: 127
Joined: Tue 28 May, 2019 7:26 pm
Location: Nelson, New Zealand

Re: My mod

#860

Post by BenN » Tue 17 Mar, 2020 7:16 pm

kaffelogic wrote:
Thu 05 Mar, 2020 8:55 am
We were able to obtain small quantities cut to length and fire polished from the University of Otago Chemistry Dept.
Juts got delivered the tube and thanks for your suggestion, they are very helpful.
Now hunting fitting clamp. wire and mesh. I'm thinking Stainless 100 mesh but may be too fine?

Will see hat available locally.
Ben

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kaffelogic
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Re: My mod

#861

Post by kaffelogic » Tue 17 Mar, 2020 8:08 pm

BenN wrote:
Tue 17 Mar, 2020 7:16 pm
kaffelogic wrote:
Thu 05 Mar, 2020 8:55 am
We were able to obtain small quantities cut to length and fire polished from the University of Otago Chemistry Dept.
Juts got delivered the tube and thanks for your suggestion, they are very helpful.
Now hunting fitting clamp. wire and mesh. I'm thinking Stainless 100 mesh but may be too fine?

Will see hat available locally.
We had the glass tube cut to the same length as the aluminium tube, so it was a drop in replacement for us.
We have used stainless 100 mesh and it works very well. Good structural strength. The aluminium insect mesh is easier to shape though.
Cable ties are typically PA6 and you may find that they are able to tolerate the temperature well - easier than a hose clamp.

BenN
Posts: 127
Joined: Tue 28 May, 2019 7:26 pm
Location: Nelson, New Zealand

Re: My mod

#862

Post by BenN » Tue 17 Mar, 2020 8:19 pm

kaffelogic wrote:
Tue 17 Mar, 2020 8:08 pm
We had the glass tube cut to the same length as the aluminium tube, so it was a drop in replacement for us.
We have used stainless 100 mesh and it works very well. Good structural strength. The aluminium insect mesh is easier to shape though.
Cable ties are typically PA6 and you may find that they are able to tolerate the temperature well - easier than a hose clamp.
Great thanks for info! I'll look around what may be easily obtain. I'll also check cable tie. I think PA6/66 is about up to 180C so being up from actual chamber so, yes, it may be good choice.

I asked to cut the tube to 180mm to mind to that copying Damian's design and keep good viewing window and keep the good amount of collector capacity.

It fit tight enough but no need for excess pressure to fit. Very nice fire polish finish. I haven't invoiced yet but what I was told was not too expensive for just one sample made for custom size.
Ben

Damian
Posts: 82
Joined: Sat 07 Dec, 2019 9:30 pm
Location: NSW AU

Re: My mod

#869

Post by Damian » Wed 18 Mar, 2020 4:14 pm

I'm looking forward to seeing some photos Ben.

My cable tie is working fine.
I just wipe the inside of tube with paper towel to keep it clean. Being able to see the beans is great, particularly for monitoring fan speeds.

I frequently roast 112g, with the cooling fans speed set 16900, I no longer loose beans. I have done some larger 130g and 135g roasts, but I get some beans going over the top, your longer tube would be better. 135g is getting a bit much though, beans fall out when removing the tube, 130g fits ok (just). The roaster can handle the load easy enough.

My basket would easily hold chaff from 5+ roasts, I could have made it half the height I reckon.

BenN
Posts: 127
Joined: Tue 28 May, 2019 7:26 pm
Location: Nelson, New Zealand

Re: My mod

#870

Post by BenN » Wed 18 Mar, 2020 4:19 pm

Damian wrote:
Wed 18 Mar, 2020 4:14 pm

My basket would easily hold chaff from 5+ roasts, I could have made it half the height I reckon.
Thanks Damian

Sure I'll put up pic when completed. Still gathering material tho.
I normally do 100g batch but I may back to 120g bath that will give me about plus or minus 100g for result

Thanks for hint of basket size :)
Ben

BenN
Posts: 127
Joined: Tue 28 May, 2019 7:26 pm
Location: Nelson, New Zealand

Re: My mod

#897

Post by BenN » Thu 26 Mar, 2020 6:42 pm

Just done bit of cutting and shaving of chaff collector plastic.

Tube is bit longer as 180mm.
I have shortened bottom and top part of plastic and shorter meth with silver insect screen.
Volume of collector is smaller than original but I try to proportion better for open part of mesh so looks balanced.

The base ( bottom) part of plastic I shaved off that hold aluminium tube so the glass tube is go though. It seems enough friction to holding there by itself but will see how it goes.
E-M5MarkII-20200326-1.jpg
This is how it looks. Black ring in background is what I took oi=off from top and bottom,.
E-M5MarkII-20200326-1.jpg (322.26 KiB) Viewed 55 times
E-M5MarkII-20200326-2.jpg
Closer
E-M5MarkII-20200326-2.jpg (236.27 KiB) Viewed 55 times
E-M5MarkII-20200326-3.jpg
Took the rid off, may experiment how much I can go up or down.
E-M5MarkII-20200326-3.jpg (267.6 KiB) Viewed 55 times
E-M5MarkII-20200326-4.jpg
Catcher looking from bottom side
E-M5MarkII-20200326-4.jpg (245.87 KiB) Viewed 55 times
My concern now is how it react to heat up /cool down and I home not braking glass.

Silver mesh may going to brown soon and I see black one was also brown. but quick wash makes.

So far I think I can re assemble with original black mash and alundum tube, if this does snot hold. But base part I have no stopper for tube and that may make but of mess when removing corrector
I have few more idea but that need tow ait until all this lockdown is resolved.


Tanks again to Damian for this great idea and showing to us and support given by Chris and his team.
I'll report back how it goes.
Ben

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