Get a laser fume filtration system #1697
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Cambridge Makespace have one — I think it's this one which is £1500+vat, to go with a laser a bit smaller than Gerald. |
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Not to poo poo the idea, which is clearly a sensible one, but do check the consumables prices and lifetime before committing to any particular filter. Moving the machine to the laser room might be a better idea, as no-one seems to complain about that one since the duct went in. |
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True, but the laser room isn't super accessible due to room size and how
full it already is. Plus having a lasercutter in the (rentable) events room
is a bonus.
Op wo 18 mei 2022 15:13 schreef Sean Jarman ***@***.***>:
… Not to poo poo the idea, which is clearly a sensible one, but do check the
consumables prices and lifetime before committing to any particular filter.
Moving the machine to the laser room might be a better idea, as no-one
seems to complain about that one since the duct went in.
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We might want to add some restrictions on what can be cut on machines with a filter — Cambridge Makespace don't allow MDF, for example, because it clogs the filter too easily, but folk who need to cut that can use the other lasers... |
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I have now applied to the fund requesting £1000 so will report back how that goes. |
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Apparently I forgot to report it here but this money was paid to us back in July last year. Not that they're chasing but has any progress been made on deciding what to get and procuring it? |
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Some filter prices from AES Solutions |
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@Sean-anotherone is going to take a look at this over the weekend and try to identify the best approach |
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I have now spent a bit of time looking at the various options and the conclusion is quite disappointing.....
There is very little information about actual "real" performance. There are a number of posts suggesting that they don't perform well for very long, which matches my experience of recirculating lab fume hoods.
Given then, that they will be experiencing a demand to remove sticky plywood and acrylic residues, I can only suggest that the cheapest model is the only one to pursue, and even then on the assumption that the filter lifetime is only a matter of hours of actual use.
There is not in my view a "good" option, but I suggest this approach is the least-worst.
Currently have so many links open I've lost track, but there was a £1200 one that seemed to be about the right size for a small laser, I got there from one of the links Jackie originally sent.
Sean
On Thursday, 25 May 2023 at 18:22:35 BST, Jackie Pease ***@***.***> wrote:
@Sean-anotherone is going to take a look at this over the weekend and try to identify the best approach
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I spoke to a sales person at HPC wrt a filter system for use with Sheila. He suggested one of these two: the BOFA AD Access Laser Fume Filter (currently £923.47 ex. VAT) or the BOFA AD Oracle Laser Fume Filter (currently £1,738.25 ex. VAT). |
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The sensor would be £250. |
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We're planning to get the AD Oracle as this appears best for Sheila (or Sophia if this is brought back into use) |
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I’ve mentioned before that I found a used extractor on Facebook Marketplace, but @JackiePease reminded me last night that I hadn’t posted about it on here. https://www.facebook.com/marketplace/item/161793030163741/ Although this is listed as a Bofa Ta40ts it is actually the AD400TS/1, which is a more easily identifiable model. The device is for sale for £350 and needs picking up from Wrexham, which I could probably do. It is stated as having filters at 75%, but whether this is used or time remaining is unclear, but as they were installed in 2020, I think it is safe to assume that these will need replacing. There appear to be 2 filters in these devices typically, a pre-filter and a combined filter. I’ve found both filters at a few sites, but this one looks quite reasonable. https://www.totalextraction.co.uk/shop/BOFA_Pre-Filter_A1030045 Pre filters are £191.40 and the combined filter is £280.80, both including VAT, but with delivery likely on top. So roughly £500 for filters. it’s also worth noting that this unit has an air fitting to provide for the air assist as well. Counting against this unit is its age and how long the filters are likely to be available in the future. |
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It seems like this is closer to the AD Access which we determined was probably too small really anyway, and with having to get new filters wouldn't really be all that much cheaper (well, I guess the VAT makes it a bigger difference). So my feeling is it's still worth buying the AD Oracle new. |
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HPC are sending a proforma for the Oracle, so that we can pay by bank transfer tomorrow. |
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The AD Oracle has arrived and is currently by the Bookcase of Things waiting to be unwrapped. |
As mentioned in #1696 we've had complaints about the fumes from Sheila. We're thinking of getting a laser fume filter that would alleviate these problems. It's worth considering that it might be useful at some point to run multiple lasers into it so should consider this when picking our option. HPC have some, including https://hpclaser.co.uk/p/bofa-ad-access-laser-fume-filter/ although we still need to work out which is best.
As it happens we came across a fund from Arnold Clark that offers up to £1000 to fund community projects so we're intending to apply to this as a way to afford the filter. https://www.arnoldclark.com/community-fund/community-group/
/cc @DoESLiverpool/laser-maintenance
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