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Post by kraftt on Sept 28, 2017 13:02:26 GMT -5
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Post by kraftt on Sept 28, 2017 14:19:30 GMT -5
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Post by henrun on Sept 30, 2017 4:06:33 GMT -5
Kraftt: Brilliant idea. Should have thought of it myself - but I am neither a skier nor a winter person... Paljon kiitoksia! I did find a bag that might end up more or less perfect for my rails: www.surfdome.com/armada_-_armada_torpedo_single_ski_bag_-_-251174I hit the order button on that one, from a Swedish vendor though. It can be length adjusted at both ends so would probably fit the 1600 rails fine. Good thinking. I am not 100% sure the cross cut rail will fit but I am fine with it on the Systainer. If it fits it is a bonus. I will take a look at ski bags in the outdoor shops over here - 'tis the season and I am thinking the "no brand" all black Junior bags might be the most cost effective solution. I don't need a 210cm long bag. Junior bags are usually around 170cm which is a good size for the 1600 rails.
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Post by kraftt on Oct 3, 2017 10:26:32 GMT -5
Was tinkering this morning working on my own version of an MT-PA. Found an old mag-lite clip (that I’ve been looking for an actual use for since the dawn of man). Just for the hell of it I wanted to see if it would clip on to the dust port of the MT55. Fits like it was made for it. Got me thinking about the recent dust bag mods on this thread so I’m throwing this out there as another possibility. There’s probably a more elegant way to couple something to the clip than a band or velcro (perhaps one of the mini nylon belt strap clips fastened to the clip) but I’m just posting if it gives anyone any ideas. I’m assuming that the 50 dust port is the same size as my 55 ?
--------------------------------------------------------------- edit- ... here's some more clip options:
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Post by henrun on Oct 3, 2017 13:30:54 GMT -5
Very Kraffty. My second mod (simple slide on top adapter) works so well it is now permanent. I am still considering using my simple Rage saw clip on pouch with zipper, it is a little bit smaller and it might (or might not) sag a little when filled up but is as easy to empty as the original. When I have the end cap in the slot (like on your photos) it is very prone to falling out. I put it in backwards for a more snug fit, the little rubber rim pinches it in place in the end cap slot/receptacle.
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Post by kraftt on Oct 3, 2017 17:31:55 GMT -5
Sagging seems to be the whole issue on all of em. So strange mafell couldn’t have done better. And that dust plug really should have been tethered to the inlet with a quality rubber molded cord and ring, it wouldn’t have bothered anyone just hanging to the side, or they could just remove it if it did. Wonder if they’re starting to sub out some of their engineering. The adapter I used on my diy collector is thin & fairly supple. It’s good because you can push the dust collector on with one hand from the back lid. But I did get some sag if I pushed it down from the top so I shortened both the inner pvc fitting (into the tub) and also the grey rubber adapter so the mafell port and pvc adapter would touch. The stubbier version is much more stout and if I push it down now it won’t go past parallel (because the outlet & inlet ports hit). I did originally slightly sand down the sharp rib on the mafell port to make pushing on an outside diameter vacuum hose adapter easier, the grey rubber plumbing fitting for my collector still grabs it fine. I really don’t need one now but I’d like to find something like this finger pinch hose clamp in the photo that would fit the mafell outlet. Might make my own. some pics from when I first made the collector and then shortened the adapter…
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Post by kraftt on Oct 3, 2017 19:24:01 GMT -5
Solved! I can't believe I didn't try this before. ( doh! ) All ya gotta do is push adapter over second 'stop-rib' on mafell port. Any chance of sagging is stopped cold because it holds it so firmly. Also benefits from pushing end port closer into collector. (In my case the first grip rib now catches on the inner bevel of adapter too.) When I push down now it just springs right back up.
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Post by calidecks on Oct 3, 2017 22:49:10 GMT -5
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Post by kraftt on Oct 4, 2017 8:51:15 GMT -5
So it looks like swivel ports are the same diameter but your tubing adapter wall is beefy enough that it doesn't need to push over the second swivel rib to provide stability. I think I see where to take the clip + second rib insights now - if I just get another abs or pvc bushing and cut expansion kerfs (maybe a lot more than just the 4 in the image) and possibly some shallow grooves on the inside to catch on mafell ribs I can simplify by removing rubber adapter altogether and having rigid bushing/flange just push on (click into place) / pull off. The more kerfs I cut the less resistance to expansion but I could always add a rubber band around the outside to dial in. --------------------------------------------- Just tried a quick hatchet test with a scrap of pvc. This piece of junk holds surprisingly well as is and even 'clacks' into place with just the right amount of force you would want both on & off (funny). So I think I'll do the two big gap tooth cuts again in a flange when I get a chance and bake it in oven and then form with a pair of gloves to get the exact size and grooves molded in, in one shot. Prob need to plug the mafell port with a dowel so it doesn't deform under increase pressure/heat too, and now I'm thinking one groove is plenty.
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Post by kraftt on Oct 6, 2017 11:28:23 GMT -5
“Better is the enemy of good”. I think the mafell port is made with reinforced glass fiber because the pushing on & removal of a hard plastic outside attachment shows the beginnings of easy wear on the thin gripping ribs. So that’s a fail. I think I'll stick with rubber. The only way I can figure to bring the two mafell ports as close together as possible, hold fast and allow for one handed removal is to just go back to the velcro idea. Not sure if a plastic d-ring or a metal one is more viable for the bag side but it’s going to hold it up for sure.
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Post by henrun on Oct 7, 2017 5:31:59 GMT -5
It's funny how we arrive at somewhat similar conclusions over such a "trivial yet important" matter. I was happy with the adapter but realized the other day that I could shorten it significantly as all I needed was the transition for a tighter fit. So I cut down the adapter so it simply slides over the port and then the Mafell bag squeezes in tightly against the inner part/rim of the adapter. The adapter is threaded on the inside which helps with gripping the Dustbag. The plastic is of a very resilient yet moldable type so even with a lot of use I think it will hold up well over time. And I can always get one more adapter. I have a few of these dustports on other machines and I have never needed to replace a single one due to wear and tear. The adapter itself is so secure on the machine side I can't really remove it at this point - unless I cut it up. Since the Dustbag is relying on the machine for pushing out the dust I think that shorter is better. After shortening it I am past the Quick Fix and into the Permanent Solution. bildbank gratisCalidecks solution is great - even though I like my own simple solution there is no getting past the fact that keeping the inner diameter free of intrusion helps prevent blockage. Mafells solution to insert the Dustbag into the port doesn't prevent the dust port from clogging up as well as Calidecks solution. I probably won't take it further but should I find a Dustbag that slides over the port instead of going into the port and it would happen to be a good size and easy to empty I might snag one. I did receive the Skibag the other day - it is a good size and fits all the rails and with the inner straps the rails don't rattle around. I have a 1500mm and an 1800mm spirit level that I often leave behind and either one will fit in the bag with the rails. The bag has a clever shoulder sling and that enables me to bring all the long items and still carry a Systainerstack in each hand. I could constrict the bag lengthwise to a perfect length. The Skibag is a little on the wide side even for the Cross Cut Rail so I might hand the bag to a friend who has a industrial grade sewing machine. The bag has padded strips and by removing the end panel on both sides and stitching it up the bag will end up a better fit with realtively little work.
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Post by kraftt on Oct 7, 2017 9:37:52 GMT -5
I see what you did there. I had found a grooved plumbing fitting that I hoped would reduce and grab an inner-fit port (pic) but it didn’t hang over the edge enough so I abandoned that idea. I didn’t think to just shorten a reducer to it’s bevel, great solution. I can’t tell from the photo’s but my guess is that Cali might have heated up the PP inlet port on bag side and flared it a bit to help prevent build up or maybe it doesn't even need it (?). Anyways hopefully someone at mafell will roll off their pile of cash and address this issue. Best portable saw makers on the planet can’t make a dust bag that stays on ? I like that you also put your levels in the larger bag, I hadn’t thought of that and perhaps should look for one myself. Although my levels are already in their own bag it’s only works for cosmetic protection really. I’m always worried that something heavy will bend them slightly during transport and the idea of the rails acting as big brothers and the extra padding would reduce the chance of this.
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Post by calidecks on Oct 7, 2017 22:09:52 GMT -5
I didn't do any flaring. I've filled it up with sawdust without issue. It does leave some dust in the port but it doesn't clog. I'm still not completely satisfied. But that could just be my OCD kicking in.
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Post by huntsgemein on Oct 8, 2017 0:19:41 GMT -5
I reckon you're on the right track. Any pressure driven exhaust port will be more effective with both an external connection & the shortest possible length. With a vacuum driven port it's not so necessary, mainly due I suspect to the Venturi effect. However, increased exhaust velocity or length is of little use when there's a huge expansion chamber immediately behind (the dustbag) that dissipates this pressure, preventing denser dustbag packing & allowing dust to deposit in the exhaust port.
Minimal restriction in the port allows an even clearance of swarf up to the point of maximum dustbag capacity.
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Post by kraftt on Oct 8, 2017 7:58:20 GMT -5
Well the important thing is that they work and are solid fixes, that and you guys as early adopters have good on you for sharing your solutions with others.
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