RockyAussie

And the thread is firm to pull through the discs and gets harder as you tighten the disks? @Uwe has a video on one of these I think and still may have one of these.

I would have thought so as well except some videos I have seen showing them in use were quite surprising. As for the base connection do you think if a larger steel base were attached or a large collar at the post base it would be better? I am looking at getting in one for a friend and I would like to be sure that the post part at least is quite solid. I already have to make up some better quick change stamping blocks for it so I would like to avoid it turning into a marathon. I have even considered whether to transplant the workings over onto a small drill press to gain working height and strength.

Same with mine and the threads on yours show the same.

This is the part that still worries me. I see that the pin 11 is free moving and able to slide back and forth OK and you have had the little pin 25 out and I assume that that also slides back and forth OK so .....I have to ask when you have it all together and thread between the tension discs is the thread firm to pull through or does it slide through almost loosely? The thread going to the bottom normally would mean lack of top tension which could be caused by the top tension discs not coming together enough. If the thread is firm to pull through the discs then the problem is most likely at the bobbin side. Also I have to ask when you lift the foot by hand lever is there any catching when you lower it down. Are you getting a good pressure down on the leather with it. I generally check by seeing if I can lift the foot upward with my fingers and usually that will just be possible on most jobs. If it lifts easily then sometimes looping on the bottom happens and the foot pressure needs to be increased. I am sorry that I don't have one of these exact machines to check the measurements for you but I can offer that I have used a small nail cut down to length to get the right movement happening where pin 25 goes on another similar machine. The screws you loosened on the back plate in your video will further distance that pin 25 from working and I would do them up firm before making a pin up. That pin can be loose fit but definitely not tight. See if there is a difference in that pin 25 length from your old to new set as well first.

Clear acrylic is often used and has the advantage of being able to be seen through as you use it. Laser cutting makes this a quick and easy job but alas if it is a small diode laser normally they will only cut black or red colours and not clear. If you can say what state or town in the world you are in it would help others to suggest where you can get it and who could cut it etc. It is very available all over the world but the sheets are large and it is usual to get the sheets cut to a size you want locally. Here in Rockhampton I have a supplier that cuts what I want to size and I can laser cut the finer stuff after myself.

I think to get the differences between a 58 and 72 you may be better to post this question in the sewing machine section. I have had both but that was quite some time ago and both were quite good in use. I think there was a difference in the thread take up knob adjustment section but the 72 may have had a larger bobbin capacity. I seem to recall the 58 was a little smaller around the arm and a little better for tight spots. @Constabulary is one person I think may know better than me.

Agreed and likewise I am always looking to improve the quality and speed of the work I do. A softer oil tan type leather should give a better result for a journal cover but all the same, one thing that is fairly common in the work I do is padding. Sometimes the padding is foam sometimes a soft leather and sometimes a sort of felt material. What this can do aside from a nice padded feel or structure form is allow the thread to pull down into the leather a little more and this can improve the overall stitch appearance. The foam compresses as the sewing machine goes across and as it uncompresses the stitch is then tighter down in the leather. The padding/foams I use are generally attached a couple of mm short of the edge and sometimes they are skived as well. Below are a couple of pictures to show how foam can give structure and aid to pull in the stitching. This first one shows the bags before their liners are put in and the foam is visible and stitching is sunken in. This one shows the liners installed and now stitched up. I would like to suggest doing the same trials you did with a little padding and compare the results. Sometimes it can take a bit of sorting to get the best results.

2 things I can think of to check. 1. Do you have a good foot pressure down on the job. If it is too light/soft for the leather than the job can lift up a bit with the needle and you will get that look your getting. 2. Are you sure that the top thread is going down in between the tension discs properly and are the tension disks closing properly even with no thread in them? If they are not securely closing you need to find out why.

They are probably trying to get their work done. It is difficult to find time to serve customers and design and make and deal with all of the other things that business let alone personal needs require you to do. I don't think the internet is as you say "where it is at" but having a web page of your products can be like having a catalogue that can show off your wares and save a little time before they show up or occasionally order online. I am 20 minutes out of town and have no advertising signs here and nor do I advertise in any local way yet I still get people track me down too regularly. Speaking for myself I would be embarrassed to say how long it takes for me to get to any special customer orders and nearly as much time is spent talking about a product as the time to make it. When I had a shop in town and sold leather craft gear and tools it generally cost me more in labour than the sales ever made. Nowdays 95% of the work I do is contact making for a few brands that do their own advertising and marketing. This is my place in the picture below.

Normally if the leather is not to dry and hard I don't seem to have much problems with the underside appearance as long as the tensions are reasonably tight top and bottom. I do use mostly normal lockstitch machines for my work. A good sharp needle does not tear its way through medium to soft temper leathers. If the leather is soft enough (Upholstry type) it can be sometimes hard to tell the top from the bottom stitch. If I was doing a lot of firm temper I just might think about making a spike on the dog foot as a pre hole presser but that may create unwanted marks around the corners and ends. Equally I suppose you could also create a bump at the back of the dog foot at the same stitch spacing that pushed the leather back up and into the knot hole area. All the machines I have, have dog feet that have a hole. On the large 441 style there is a long needle plate slot option but as I have a small dog foot and plate set for it I have not needed to use the long slotted plate one to date. I think there are some improvements being worked on for this narrow dog foot/needle plate set up at the moment over here in Aus.

I don't know if this will help but just in case it does.....many years back in my business I recoloured shoes as part of the service and some leathers and in particular oil tanned leathers were next to impossible to colour. Any oils including oils from your hands can migrate out of the leather and blemish and sometimes soften the paint finish. Angelus and most shoe acrylic paint suppliers also have a preparer solution to help remove any oils and I think with tooling veg tan, a clean up with oxalic acid is a part of the normal procedure to do before any dying is undertaken. I mention this only in case this part of the process has been missed or forgotten and because I find it hard to believe that both the resolene and the Tan Kote could be both faulty and causing the same issue. Use surgical gloves to stop any contamination when handling the leather once it has been cleaned up.

I think so but you could check by asking for the more info section on Campbell Randall or pm a message to member @CampbellRandall

Looks good....but for how well they last I would not worry ...... next Christmas and all of them trained dogs to clean up after.....might not be so popular ???

The Texon or Bondtex can be good on some bags but for one along this line you need to play with some foam on the sides for a flexible stiffening. A stiffener at the bottom and possibly some at the ends if needed but for the most part just spray glue and attach foam before stitching up and folding. The board stiffeners go in after folding outside in. This bag below is done as described as an example.

Just my experience.....The larger tables tend to get stuff left all over them and when I want to lay out a hide I never have enough room. Solution ....I bought 2 of them large plastic foldaway tables that come out for just those occasions.

Just curious ...is the shaft itself flexing or is it flexing at the base where it attaches? I have seen some now that have some springs attached at the hot plate part that appear to let the head centre down more evenly maybe on non even products. Not the best solution but it may help some to look into that. Having a few different hot stamping machines myself I can say that none of them have such a thin looking base to connect into and I wonder if the post could be mounted into a more substantial base perhaps?

Cant help much but from what I see there are different grades as shown in this link - https://www.dupont.com/knowledge/grades-of-delrin.html

Here are a couple of things may help .- https://www.aliexpress.com/item/32993984374.html The disk does not look to be in there correctly or perhaps it is not even an original disc?

Can I ask if it is possible that the disc that the spring is pushing on that is between the spring and the tension discs has been turned around the wrong way? If it is then it is possible that the pin can not reach the normal contact point on that disk that the pin pushes against to open.

It may depend on the machine and your picture is too close to be sure. The ones I have and all the others I've seen the bottom roller turns with the top meaning they are connected by gears. If the bottom plate is hinged and taken down too far it may be possible to disengage the gears perhaps. The top that at the moment shows no blades looks too close to the nylon roller for that to be likely so I can only ask for a few more pictures taken further back. If the nylon roller is turning freely then it has not been tightened up correctly and will cause damage.

I was just thinking that bringing a piece off of the top with a snap fitting could work quite nicely. The snap fitting could do up on the strap D. The one I used in the making of this bag opens up a bit like a clothes peg and works very well single handed as well. Regards Brian

There was an excellent video that showed how to do a basic timing fix on this type of machine by Solar Leather but that now appears to have gone private now. First thing I can say is check that when your needle is all the way up that there looks to be a 3mm (1/8") gap between where the needle bar shaft and the needle holder piece attach. Any much less and the needle has been knocked up. The best video I can suggest is one by our most honourable members @Uwe in this following video- https://www.youtube.com/watch?v=ZT3AVgj_HLI Note there is a measurement early on in it that gives the height that the needle bar should be at.

A bit of emery cloth would be better than the file but I would suspect that you may have knocked the timing out. Double check that the needle bar has not moved up before any other adjustments.

I have to say that they are about the most forgiving machine I have ever come across. When you go through all the specs and see how many things can be out and yet they still mostly seem to do a decent job?????

That's one where a little bit goes a loooooong way. If you get it right with less than 3 try's you're way better than me.